4.8 out of 5 stars based on 20 product ratings, 4.8 out of 5 stars based on 166 product ratings, 4.9 out of 5 stars based on 174 product ratings, 4.8 out of 5 stars based on 175 product ratings, 4.8 out of 5 stars based on 190 product ratings, 5.0 out of 5 stars based on 1 product rating. Disable the zone Some states do not allow the System Sensor i3 series smoke detectors represent significant advancement in conventional detection. Remove power from alarm control unit or initiating device circuits before installing detectors. Any advice/help would be greatly appreciated. it become necessary, the screen/sensing chamber is field replaceable. Vacuum or use canned air to remove any dust or particles that are present on both chamber halves. $59.99. way to insure proper operation of 2-wire i3 smoke detectors (2W-B, 2WT-B, System Sensor webinars provide relevant and timely information on products, market trends, and legislation. Improper connections can prevent a system from responding properly in the event of a fire. 2W-B Datasheet (PDF) - Systemsensor advanced ideas. I recommend powering down the system and placing your system on test mode if monitored before swapping in the new smoke. 1050 0 obj <>stream Blink 10 sec CAUTION 8. (Figure 5). Compatible Brand. 5. No Contract Alarm Monitoring starting at $10 a month! System Sensor shall have no liability. General Description %PDF-1.6 % Latching Alarm: Reset by momentary power interruption The 2W -MOD2 can. Solid, After an initial power-up delay, the red and green LEDs will blink synchronously once every ten seconds. NOTE: Before testing, notify the proper authorities that maintenance is being However zones 1 and 2 can support 16 on each zone. The 2W-MOD can indicate a need for cleaning, replacement, or a freeze condition (2WT-B only) at the control panel or module. 5.3 inches Before Installing Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. 15 Tamper-Resistant Feature Buy the System Sensor 2WTA-B Smoke and Heat Sensor from Alarm Grid. has been momentarily interrupted. the use of a mounting base that may be pre-wired to the system, allowing the the removal of detectors before beginning construction or other dust producing activity. I have since replaced the battery, which has resolved the smoke error. performed and the system will be temporarily out of service. Preview PDF Download HTML 2W-B Datasheet (PDF) - Systemsensor advanced ideas. Three-Year Limited Warranty Power-up Page 2 System Sensor two-wire smoke detectors are marked with a compatibility identifier located on the label on the back of the product. If the System Sensor products are designed and manufactured to meet or exceed various product safety and certification requirements. Models 2WT-B and 4WT-B also feature a restorable, built-in, fixed temperature All wiring must be installed in compliance with the National Electrical Code, View a list of all System Sensor locations worldwide. Similar Part No. may also have other rights which vary from state to state. Comment When low beam is activated, it's possible to change into high beam by pushing the wire remote. Two-Wire Compatibility. into the base and lock into place with a click. B401B / B406B / B110LP / B116LP A 120 System Sensor 2800 A Photo N/A N/A 120 System Sensor 2800TH A Photo / Therm. NOTE: To install units so that corresponding LEDs are lined up, refer to the SWITCH WITH A When I put the system in alarm mode and set it off, the panels still have the same behavior and the sirens (not the keypad alarm) do not sound. Holes. Figure 3b: Wiring Diagram, 4W-B and 4WT-B %%EOF For two-wire models 2W-B and 2WT-B, connect detectors only to compatible alarm control panels as identified by System Sensor's compatibility chart. Do these detectors have a similar lifespan? Hey, guys. for use with i3 Series compatible control panels or the i3 Series 2W-MOD module only. 1. from the end of the feed wire, inserting it into the proper base terminal, and 4.3 (21) $6371. The 2W-B should work zones 1 and 2 since they are designed for system sensor 2-wire devices. Wiring Diagrams item 6 System Sensor 2W-B i3 Series 2-wire, Photoelectric Smoke Detector. item 3 System Sensor 2W-B 2WB i3 Series 2-wire Photoelectric Smoke Detector System Sensor 2W-B 2WB i3 Series 2-wire Photoelectric Smoke Detector. The Companys obligation You can also remove the detector cover and the sensing chamber for convenient smoke detector cleaning. The mounting base installation is It will take approximately 80. seconds for the detector to finish the power-up cycle (see Table 2). Brightness sensor Mode The sensor is activated. To test this please remove AC power and set the panel into alarm mode to see if the battery will support the system and report back. sensitivity back to the factory setting when it becomes more sensitive due to $156.00. C. Direct Heat Method (models 2WT-B and 4WT-B only) 45 The smoke alarm was perfectly compatible with my 24-year old house alarm system. Are a Smoke Alarm and a Smoke Detector The Same Thing? The LED indication must not be used in lieu of the tests specified under Testing. NOTICE: This manual shall be left with the owner/user of this equipment. 23 mA 24 Volt Systems Installation of the 2W-B, 2WT-B, 4W-B, and 4WT-B detectors is simplified by No agent, representative, dealer, or employee of the Company has the authority to To engage the tamper-resistant feature, cut the small plastic tab located on the mounting base (Figure All i3 Series detectors are designed to provide open area protection. Place detector on the base and rotate clockwise. Additionally, to my comment below will the base of the unit likely fit the old base so I can just twist it into place after connecting the wires? Disable the zone or system undergoing maintenance Authority Having Jurisdiction. Dust covers are an effective way to limit the entry of dust into the smoke detector sensing chamber. exclusion or limitation of incidental or consequential damages, so the above limitation 1. 4W-B and 4WT-B are 4-wire photoelectric smoke detectors. The i3 Series heads and bases are keyed so that a 2-wire head will only mount which provides detailed information on detector spacing, placement, zoning, wiring, and special applications. I would like to replace it with similar 4 wire detector like the 4WT-B detector and wanted to check if they are compatible? Just fill out the form and click your area of interest. After some recent electrical work (new AC unit in the attic) the vista 20p shows fire trouble, and occasionally sets off the alarm. 0 The 2W-B is a 2-wire, photoelectric i3 smoke detector. I was planning on installing about 11 of these on a vista 21ip panel, what is the power draw I should account for when planning against the 650 mA allowance for the panel? There are no express or implied warranties of any kind with this calculator. St. Charles, Illinois 60174. Condition Replace the top half of the screen/sensing chamber by aligning the arrow To view our listings, please visit one of the following sites. 2W-B and 4W-B: If they are not just take a photo of the connections and land what is connected to the positive connection the new plates positive and same with the negative. Blink 10 sec indicate a need for cleaning, replacement, or a freeze condition (2WT-B only) System Sensor makes no representations whatsoever with regard to the quality or function of AFMGs EASE Evac software. The 2W-MOD can indicate a need for cleaning, replacement, or a freeze condition (2WT-B only) at the control, Installation of the 2W-B, 2WT-B, 4W-B, and 4WT-B detectors is, simplified by the use of a mounting base that may be pre-wired, to the system, allowing the detector to be easily installed or, removed. Smoke Entry Test Hello, I have a vista 20P (came with the house I bought) that has (4) 2 wire smokes wired in. The System Sensor 2WTA-B is a 2-wire smoke and fixed heat sensor with a built-in sounder. manufacturer on the implementation of Style D circuits. 32 to 120F (0 to 49C) System Sensor two-wire smoke detectors are marked with a compatibility Whenever an alarm is detected by the System Sensor 2W-B, the smoke detector will show a solid red LED. The System Sensor 2W-B is a 2-wire smoke detector and a member of System Sensors i3 Series of photoelectric smoke detectors. 135F (57.2C) This device complies with part 15 of the FCC Rules. Smoke detectors are not to be used with detector guards unless the combination has been evaluated and found suitable for that purpose. 2.0 inches Operating Humidity Range: NIB!! This document contains information on model numbers, descriptions, markings, and lens color. 100 To calculate performance-based strobe coverage, the inverse square law is used to calculate the illumination at each of the angles in the horizontal and vertical planes per ANSI/UL 1971, Standard for Signaling Devices for the Hearing Impaired, and the effect of polar distribution is included using the minimum percentages in ANSI/UL 1971 or actual test results recorded by the Listing organization. System connected smoke detectors may be successfully deployed for many years, and no scheduled end of life replacement is prescribed. WIRING DIAGRAMS FIGURE 3A: WIRING DIAGRAM, 2W-B AND 2WT-B 2 . For convenience, the 2W-B mounting base can also be directly mounted to the ceiling using drywall fasteners. I am very happy with the purchase and while I only needed one I bought 2 to have one in reserve. Each i3 Series detector is supplied with a mounting base that can be mounted: 2.To a 312-inch or 4-inch octagonal box, or, 3.To a 4-inch square box with a plaster ring, or. Two-wire Maximum Initial Wire connections are made by stripping approximately 14-inch of insulation from the end of the feed wire, inserting it into the proper base terminal, and tightening the screw to secure the wire in place. System Sensor is pleased to provide this Strobe Coverage Calculator, formerly known as Equivalent Facilitation Calculator. detector counterclockwise. Start-up Time: Ensure proper wiring and power is applied. In no case shall the Company be liable for any consequential or incidental damages for Ripple Voltage: Table 2: Power-up Sequence for LED Status Indication* System Sensor 2W-B Photoelectric i3 Smoke Detector, 2-Wire In Stock Other products from System Sensor System Sensor P4W-P Horn Strobe, White, Wall Mount, Four-Wire System Sensor PC2W Horn Strobe, White, Ceiling Mount, Two-Wire, FIRE Lettering System Sensor B210LP Detector Base, Plug-In Proper wire gauges should be used. tamper release tab, located on the skirt of the mounting base, and turn the The mounting base installation is further simplified by the incorporation of features compatible with drywall fasteners. The 2W-MOD2 installation manual may be downloaded from the Max. Trending price is based on prices over last 90 days. Reinstall the detector and test. You have been registered for product and offer updates. With less intelligent smoke detectors, a dirty photoelectric chamber will results in false alarms. It should connect the same exact way. The LED indication must not, be used in lieu of the tests specified under Testing. Ready to learn more? 0.3 sec All models incorporate a state-of-the-art optical sensing chamber and an advanced microprocessor. its listed sensitivity range, the green LED blinks once every five seconds. Should the alarm verification reset exceed 10 seconds, use the maximum initial start-up time. KingOfTheP4s 3 yr. ago Best thing to do in this case would be to call the company of your choice, such as EST, and ask a sales representative to give you a list of MRI-safe devices. 3. This system was used with Cox before, so no telling what all they did to it. current list of detectors and UL Listed compatible control units. note describing the malfunction and suspected cause of failure. POWER . Figure 1: Mounting of Detector. System Sensor 2WTA-B specifications Below you will find the product specifications and the manual specifications of the System Sensor 2WTA-B. Installation of the 2W -B, 2WT -B, 4W -B, and 4WT -B detectors is simplified . When the alarm goes off, both keypads seem like they short out for a second (the display panel goes blank the ready and arm lights flash, and it makes a weird beeping noise) then starts the alarm tone at the keypads only. Twisted pair may be used to provide additional protection against extraneous electrical interference. 2. Honeywell's Esser brings Optical smoke detectors ES Detect which have ability . *Refer to Electrical Specifications for start-up time in conjunction with panel Also known as: 2WTAB, BK-2WTAB. Test i3 Series detectors as follows: I am wondering if there is too much power connected to the panel for the sirens to sound. To measure the detectors sensitivity, the i3 Series Model SENSRDR Infrared Sensitivity Reader tool (see Figure 4) should be used. 50 A average applicable state and local codes, and any special requirements of the local 5. We're here to provide technical support for System Sensor products and service. 32 to 100F (0 to 37.8C) And today we're going to be adding two-wire smokes to our DSC Neo system. 32 Degrees to 120 Degrees F. Battery Backup. All System Sensor i3 Series smoke detectors are designed for easy installation, advanced detection and fast inspection. No Contract Alarm Monitoring starting at $10 a month! System Sensor 2WTA-B I3 Series 4-Wire Conventional Photoelectric and 135F Fixed Temperature Thermal Detector with Built-in Sounder, 85 dB Sounder, Form C Relay, Isolated Thermal Sensor. The 2W-B smoke detector works with most Honeywell alarm control panels including the VISTA-20P and VISTA-21iP as System Sensor is a subsidiary of Honeywell. When using the System Sensor 2W-B two wire smoke detector with a VISTA-20P or VISTA-21iP alarm control panel, you should wire the smoke detector to zone one. needed" signal. NOTE: Style. Compatible with 12- or 24-volt systems. System Sensor's AV notification devices are one of the most versatile, easy to install, and cohesive audible visual (AV) notification appliances in the industry. 1o)!2'1hg'0?,s1e*F 6S(Ft50 AKTX"897cOF 7 AUX OR + Max. The heads and bases are clearly identified as either 2-wire or 4-wire. 3825 Ohio Avenue InnovairFlex duct smoke detectors combine an impressive collection of innovations to greatly simplify HVAC system monitoring. In order for this feature to work properly, the chamber must never be opened while power is applied to the smoke detector. The i3 line redefines installation ease with its plug-in design. power is applied to the smoke detector. The microprocessor allows the detector to automatically adjust its sensitivity back to the factory setting when it becomes more sensitive due to contaminants settling in its chamber. Wd]_c'F1p% DIAMETER TOOL, Figure 5: Removing/Replacing Screen/Sensing Chamber This chart contains the current list of detectors and UL Listed compatible control units. In a freeze, trouble condition, the red LED will blink once every 10 seconds, To measure the detector's sensitivity, the i, RDR Infrared Sensitivity Reader tool (see Figure 4) should be, Models 2W-B and 2WT-B also include an output that allows an. System Sensor 2451 A Photo B401B / B406B / DH-400 / B110LP / B116LP A 120 System Sensor 2451TH A Photo / Therm. I see other smoke detectors that claim a lifespan of 10 years and recommend replacement at that time. Refer to Fill out our feedback form! We offer conventional and intelligent products for smoke detection, heat detection, fire and CO combination detection, and multi-criteria / multi-sensor detection, as well as bases and accessories. A copy of this and service during the three year period commencing with the date of manufacture. (135F) thermal detector and are also capable of sensing a freeze condition if To measure the detectors sensitivity, the i3 Series Model SENS-RDR Infrared Developed and delivered by Honeywell industry experts, HBU training employs techniques and technologies to help your teams learn everything they can about our products. However, the i3 Series smoke detector allows for fast and easy inspection. Alarm Reset Time: I have a Vista 6150 15P Control Panel and an old System Sensor 2312/24TB 4 wire Smoke/heat detector. Near fresh air inlets or returns or excessively drafty areas. Please include a 2W-B and 2WT-B, connect detectors only to compatible alarm control panels as identified by System Sensor's compatibility chart. Fill out the form and we'll contact you shortly. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used Thank you for the response @disqus_YuNiL6S1Rn:disqus. At a minimum, cleaning should be performed annually. H\@}&&u/tc1.|UH*_7]}8s5CC)^.+Jj__}}}weqxes;,64qh{>?bxN}9_iIg]9.oM:,=nKE%ml)R.g")d6KO)\1WK%yaycN,Y`.K3{daal4{=fOW)=#=#=SoB#. 1000 0 obj <> endobj FREE delivery Mar 8 - 10. 2. Improper connections can testing. General CLSS Tool Suite Discontinued Product Finder AV Audio Samples: AV Tones Calculator: AV Strobe Coverage Calculator: Voltage Drop Calculator: Sound Pressure Loss System Sensor products are designed and manufactured to meet or exceed various product safety and certification requirements. Place control panel or module in EZ Walk Test mode (refer to panel manufacturers manual or 2W-MOD manual D500-46-00). After all detectors have been installed, apply power to the alarm control HOTFire is a free online site that helps users quickly plan and model notification appliance circuits (NACs) using the entire line of SpectrAlert Advance and L-Series. tightening the screw to secure the wire in place. Power must be removed from the detector are capable of generating a maintenance needed signal. w responsible for an unreported house fire. Our understanding is that EASE Evac voice evacuation design software from AFMG Technologies is intended to help designers and installers save time and money on voice evacuation systems by enabling them to preplan the system to meet new intelligibility code requirements, reduce costly post-installation changes, and limit over-design. Connectivity. heads and bases are clearly identified as either 2-wire or 4-wire. In wet or excessively humid areas, or next to bathrooms with showers. ey+L) l\q8e)2FWfQCCvBm Yrsza G( Vc Gz;?TP!k5UY6m}*i*OGWfMPMN O_\mV=}gj{sf! tLC>[PWGq9 p Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. Heat Sensor (Model 2WT-B and 4WT-B): 1015 0 obj <>/Encrypt 1001 0 R/Filter/FlateDecode/ID[<493E40FFCF1D3F747B74E48D03207C10>]/Index[1000 51]/Info 999 0 R/Length 93/Prev 198552/Root 1002 0 R/Size 1051/Type/XRef/W[1 3 1]>>stream Remove the top half of the screen/sensing chamber by lifting straight up for System Smoke Detectors, which provides detailed information on detector 35 35 Volts Hold a smoldering punk stick or cotton wick at the side of the detector and Twisted pair may be used to provide additional protection detectors to the alarm control panel and accessory devices should be colorcoded to reduce the likelihood of wiring errors. Peak Standby Current: It will take approximately 80 seconds for the detector to finish the power-up cycle (see Table 2). The calculated illumination is required to be at least 0.0375 lumens/ft2 at any point within the covered area. Initial LEDStatus Indication The device uses photoelectric technology to detect smoke, while the fixed heat sensor activates at temperatures of 135F and higher. This includes cleaning. After power-up has completed and the detector is functioning normally within its listed sensitivity range, the green LED blinks once every five seconds. This feature is 4. Start-up Time: 46 | Microsoft VP Marcus Fontoura on Architecting Azure, the "World's Computer" 0:00 / 0:00. DETECTOR I am very happy with the purchase and while I only needed one I bought 2 to have one in reserve. System Sensor webinars provide relevant and timely information on products, market trends, and legislation. They were an easy mount adapted to our smoke detecting system. gently blow the smoke through the detector until it alarms. mounted: Proper wire gauges should be used. 1. If the detector is in need of maintenance, because its sensitivity has shifted outside the listed limits, the red, LED blinks once every five seconds. By subscribing I give my consent to receive AlarmGrid e-mails about Our hardwired CO detectors with RealTest use electrochemical sensors to measure carbon monoxide levels and alert residents with a flashing Temp-4 signal alarm. Models 2W-B and 2WT-B are 2-wire photoelectric smoke detectors; models Add the hardwired 2W-B smoke detector to most existing alarm system control panels. Low-Profile Plug-in Smoke/Heat Detector 800 Series System Sensor's 800 series detectors are 2-wire conventional profile plug-in detectors aimed to meet the performance criteria designated by UL. The EZ Walk loop test verifies the initiating loop wiring and provides System Sensor web site at www.systemsensor.com. Hayden here again from Alarm System Store. condition if the temperature is below 41F. Figure 3a: Wiring Diagram, 2W-B and 2WT-B. Compatible with SENS-RDR sensitivity tester; Full agency compliance with UL 268 and UL 2075; Technical Specifications: System Voltage: 12/24 VDC; Alarm Contact Ratings: NFPA 72 requirements. Thanks for using Alarm Grid as a resource.For the purpose of improving our site, wed like to know if you are one of the following: INSTALLATION AND MAINTENANCE INSTRUCTIONS, Series Copyright 2023 Honeywell International Inc. Using a 1000-1500 watt hair dryer, direct the heat toward either of the thermistors. 2WT-B and 4WT-B: However, you can also use the 2W-B smoke detector with other alarm control panels, but you should verify compatibility with the manufacturer of the alarm control panel first. (For 2W-B and 2WT-B, panel must limit current) monoxide(co)/photoelectric smoke detector (4 pages), Manual will be automatically added to "My Manuals", Installation and maintenance instructions, Smoke Alarm System Sensor 4WT-B Installation And Maintenance Instructions, Smoke Alarm System Sensor 2WT-B Installation And Maintenance Instructions, Smoke Alarm System Sensor 2WTR-B Installation And Maintenance Instructions, Smoke Alarm System Sensor 2100ARFT Installation Instructions Manual, Smoke Alarm System Sensor 2251EIS Installation And Maintenance Instructions Manual, Smoke Alarm System Sensor 22051E-RF Installation And Maintenance Instructions Manual, Smoke Alarm System Sensor 2112 Installation And Maintenance Instructions, Smoke Alarm System Sensor FSB-200 Installation And Maintenance Instructions Manual, Smoke Alarm System Sensor BEAM1224 Installation And Maintenance Instructions Manual, Smoke Alarm System Sensor 2351E Installation And Maintenance Instructions, Smoke Alarm System Sensor DH100ACDCLP Installation And Maintenance Instructions Manual, Smoke Alarm System Sensor 2100AT Installation And Maintenance Instructions, Smoke Alarm System Sensor 6500S Installation And Maintenance Instructions Manual, Smoke Alarm System Sensor i4 Series COSMO-2W Installation And Maintenance Instructions, Smoke Alarm System Sensor Innovair flex D4120A Installation And Maintenance Instructions Manual. The calculator was programmed to assist you in the design of audible/visible notification device circuits. The Company shall not Should Testing I have a DSC alarm system that my current System Sensors are connected to and would I need to do anything special when I replace the old with the new other then reset the system? Remove the detector cover by turning counterclockwise. System Sensor does not provide any design or engineering services. Each i3 Series detector is supplied with a mounting base that can be List Price. - 2W- B More results Similar Description - 2W-B More results Wait approximately six minutes before performing EZ Walk test. LED should light within five seconds. try to correct the interference by one or more of the following measures: Cross-Reference: AV L-Series to SpectrAlert Advanced, Cross-Reference: Base/OEM Detector Compatibility, DOWNLOAD STROBE COVERAGE CALCULATION EXAMPLES AVFL220, DOWNLOAD CTA System Sensor Speaker GLL Files, DOWNLOAD SS BASE DETECTOR CROSS-REFERENCE, DOWNLOAD SS BASE DETECTOR CROSS-REFERENCE LEGACY. Alarm, Red LED NOTE: Before performing maintenance on the detector, notify the proper authorities that maintenance is being performed and the system will be temporarily out of service. Models 2W-B and 2WT-B are 2-wire photoelectric smoke detectors; models 4W-B and 4WT-B are 4-wire photoelectric smoke detectors. Diameter (including base): Green LED indicator on the base. An overview of latest updates, essential resources, and webinars. They also answer your questions from the comfort of home or the office. Copies of this manual are available, NOTICE: This manual shall be left with the owner/user of this, IMPORTANT: This detector must be tested and maintained regu-, larly following NFPA 72 requirements. of this Warranty shall be limited to the repair or replacement of any part of the smoke System Sensor offers world-class fire detection and notification solutions. Voltage Drop calculations for System Sensor AV products can be done using the Honeywell Online Tools for Fire (HOTFire) site. Please refer to insert for the Limitations of Fire Alarm Systems Now it's easy to identify System Sensor bases that are compatible with individiual OEM detectors. detector. ld house alarm system. Air conditioners, heaters, fans, and fresh air intakes and returns can drive smoke alarm verification. unit. such as kitchens; in garages (vehicle exhaust); near furnaces, hot water Replace the detector cover by placing it over the screen/sensing chamber Therefore, System Sensor recommends Loop verification is provided by the EZ Walk loop test feature. System Sensor two-wire smoke detectors are marked with a compatibility identifier located on the label on the back of the product. All models incorporate a state-of-the-art optical sensing, chamber and an advanced microprocessor. Reset all the detectors at the alarm control unit. Notify the proper authorities that the system is in operation. System Sensor warrants its enclosed smoke detector to be free from defects in materials to prevent any unwanted alarms. Two LEDs on the detector provide a local visual indication of the, After an initial power-up delay, the red and green LEDs will blink, synchronously once every ten seconds. the listed limits, the red LED blinks once every five seconds. or exclusion may not apply to you. prevent a system from responding properly in the event of a fire. There is a red and green LED on the head of the 2W-B smoke detector. As long as they operate at 12 Volts DC, they should work. The cable companies often use a special adapter to monitor a VISTA-20P system as explained at https://www.alarmgrid.com/videos/how-to-safely-remove-an-icontrol-from-an-existing-system. I am not of the exact model number of the existing 2-wire smoke detector so I cannot say for sure if the back plates are the same. list is available from System Sensor upon request. In or near areas where particles of combustion are normally present such as kitchens; in garages (vehicle exhaust); near furnaces, hot water heaters, or gas space heaters. FREE delivery Sat, Feb 11. 7. 4. Electrical Specifications 2-wire 4-wire In dusty, dirty, or insect-infested areas. Unlike traditional detection systems, Reflected Beam Smoke Detectors were designed for spacious rooms, open areas, and high ceilings; their innovative features make them popular choices for spaces like warehouses, atriums, arenas, and churches. The 2W-B smoke detector consists of a mounting base that can be mounted on a single gang box, a three and a half or four inch octagonal box or a four inch square box with a plaster ring. item 2 System Sensor 2W-B I3 Series 2-Wire Photoelectric Smoke Detector, item 3 NEW System Sensor 2W-B 2WB i3 Series 2-Wire Photoelectric Smoke Detector Fire, item 4 System Sensor 2W-B i3 Series 2-wire, Photoelectric Smoke Detector, item 5 NEW System Sensor 2W-B 2WB i3 Series 2-Wire Photoelectric Smoke Detector Fire.

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