Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

FIRENOTIFIER.COM, LLC

System Sensor 4WTA-B

System Sensor 4WTA-B

FIRENOTIFIER.COM, LLC

System Sensor 4WTA-B

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$82.20

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shopping designed around you.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Saving this product will notify you when it’s back in stock

Description

System Sensor i3 sounder and relay smoke detectors apply the guiding principles of installation ease, intelligence, and instant inspection in a series of specialty conventional devices.
To reduce the likelihood of nuisance alarms, all i3 de...

Delivery & Returns

Returns accepted within 14 days

Exclusions may apply. See full policy

FIRENOTIFIER.COM, LLC

You might also like

System Sensor 4WITAR-B Smoke Detector and Thermal Sensor

17% off

The Fire Alarm Supplier

System Sensor 4WITAR-B Smoke Detector and Thermal Sensor

System Sensor B501-WHITE 4 Inch Detector Base White

17% off

The Fire Alarm Supplier

System Sensor B501-WHITE 4 Inch Detector Base White

Macurco GD-2A

FIRENOTIFIER.COM, LLC

Macurco GD-2A

System Sensor 4WT-B Four Wire Smoke Detector With Built-In Heat Sensor - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor 4WT-B Four Wire Smoke Detector With Built-In Heat Sensor

Fire and Safety Plus

System Sensor 2W-B i3 Series 2-wire, Photoelectric i3 Smoke Detector

Fire and Safety Plus

System Sensor HWL-LF L-Series 2-Wire, 24 Volt, 520Hz, Wall Sounder, White

FIRENOTIFIER.COM, LLC

System Sensor PDRP-2001

FIRENOTIFIER.COM, LLC

System Sensor P2WL-LF

FIRENOTIFIER.COM, LLC

SYSTEM SENSOR SCWL

FIRENOTIFIER.COM, LLC

Fire-Lite SB-10 Surface Mount Backbox for BG-12 Pull Stations

System Sensor B300-6-IV 6" Detector Base Ivory

17% off

The Fire Alarm Supplier

System Sensor B300-6-IV 6" Detector Base Ivory

System Sensor COSMO-2W

FIRENOTIFIER.COM, LLC

System Sensor COSMO-2W Combination CO / Smoke Detector

SYSTEM SENSOR SPSCWL

FIRENOTIFIER.COM, LLC

System Sensor SPSCWL Ceiling Speaker Strobe White

Fire-Lite Alarms LCD-80F

FIRENOTIFIER.COM, LLC

Fire-Lite Alarms LCD-80F

FIRENOTIFIER.COM, LLC

System Sensor HRL

System Sensor 4WTA-B Four Wire Smoke Detector With Built-In 135 Degree Fixed Heat Sensor & Sounder - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor 4WTA-B Four Wire Smoke Detector With Built-In 135 Degree Fixed Heat Sensor & Sounder

System Sensor COSMOD4W 4-wire Smoke CO Detector Interface Module - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor COSMOD4W 4-wire Smoke CO Detector Interface Module

Fire and Safety Plus

System Sensor 4WTAR-B 4wire photo w/therm Detector

System Sensor SYS-EOLR1 Power Supervision Module For 4 Wire Smokes - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor SYS-EOLR1 Power Supervision Module For 4 Wire Smokes

FIRENOTIFIER.COM, LLC

System Sensor MOD2W

Next Security Corp

4W-B SYSTEM SENSOR

System Sensor 2351TB Photoelectric and Thermal Smoke Detector White

17% off

The Fire Alarm Supplier

System Sensor 2351TB Photoelectric and Thermal Smoke Detector White

FIRENOTIFIER.COM, LLC

Edwards Signaling SD-PH Protective Housing

System Sensor 2WT-B i3 2-Wire Smoke and Heat Detector

17% off

The Fire Alarm Supplier

System Sensor 2WT-B i3 2-Wire Smoke and Heat Detector

(3)

Fire Alarm Depot

System Sensor DNR(A) Intelligent Duct Smoke Detectors (NEW)

FIRENOTIFIER.COM, LLC

Notifier NCM-W Network Communications Module

System Sensor B200S-IV Plug-In Detector Base

17% off

The Fire Alarm Supplier

System Sensor B200S-IV Plug-In Detector Base

Fire-Lite SD365-IV

FIRENOTIFIER.COM, LLC

Fire-Lite SD365-IV Photoelectric Smoke Detector (Ivory)

FIRENOTIFIER.COM, LLC

System Sensor HCWL-LF

FIRENOTIFIER.COM, LLC

Silent Knight SK-PHOTO-W Addressable Smoke Detector

System Sensor 4WTA-B Smoke Detector 4-Wire

17% off

The Fire Alarm Supplier

System Sensor 4WTA-B Smoke Detector 4-Wire

System Sensor RRS-MOD Reversing Relay For Smokes With Built-In Sounders - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor RRS-MOD Reversing Relay For Smokes With Built-In Sounders

System Sensor 2WTA-B Two Wire Smoke Detector With Built-In Heat Sensor And Sounder - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor 2WTA-B Two Wire Smoke Detector With Built-In Heat Sensor

System Sensor 2WTR-B Smoke Detector with a Thermal Sensor

17% off

The Fire Alarm Supplier

System Sensor 2WTR-B Smoke Detector with a Thermal Sensor

19% off

Fire and Safety Plus

System Sensor 2WT-B Photoelectric i3 Series Smoke Detector, 2-Wire, 135F Fixed Thermal Sensor, White

Honeywell Resideo 5800SMOKEV Wireless Smoke / Heat Detector - AlarmSystemStore.com

AlarmSystemStore.com

Honeywell Resideo 5800SMOKEV Wireless Smoke / Heat Detector

System Sensor COSMOD2W 2-wire Smoke CO Detector Interface Module - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor COSMOD2W 2-wire Smoke CO Detector Interface Module

System Sensor SS-HEAT-ROR Thermal Detector

17% off

The Fire Alarm Supplier

System Sensor SS-HEAT-ROR Thermal Detector

System Sensor 4W-B Four Wire Smoke Detector - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor 4W-B Four Wire Smoke Detector

FIRENOTIFIER.COM, LLC

Kidde GSA-CT1 Addressable Single Input Module, UL/ULC Listed

System Sensor B300-6 6 Inch Detector Base White

17% off

The Fire Alarm Supplier

System Sensor B300-6 6 Inch Detector Base White

System Sensor COSMO-2W Smoke and Carbon Monoxide Detector

17% off

The Fire Alarm Supplier

System Sensor COSMO-2W Smoke and Carbon Monoxide Detector

System Sensor OSI-R-SS Reflected Type Beam Smoke Detector, 4-Wire

17% off

The Fire Alarm Supplier

System Sensor OSI-R-SS Reflected Type Beam Smoke Detector, 4-Wire

$939.65$1,127.58

System Sensor WFD25N 2.5" Waterflow Detector

17% off

The Fire Alarm Supplier

System Sensor WFD25N 2.5" Waterflow Detector

System Sensor COSMOD4W i4 Series, 4-Wire Interface Module

17% off

The Fire Alarm Supplier

System Sensor COSMOD4W i4 Series, 4-Wire Interface Module

12% off

Fire and Safety Plus

System Sensor 2WTA-B Photoelectric i3 Series Smoke Detector, 2-Wire With Thermal Sensor and Built-In Sounder

System Sensor COSMO-4W 4 wire Smoke CO Detector Combo - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor COSMO-4W 4 wire Smoke CO Detector Combo

System Sensor PC2WL-LF L-Series Low Frequency Sounder Strobe

17% off

The Fire Alarm Supplier

System Sensor PC2WL-LF L-Series Low Frequency Sounder Strobe

Macurco GD-2B

FIRENOTIFIER.COM, LLC

Macurco GD-2B

FIRENOTIFIER.COM, LLC

System Sensor 2W-B

System Sensor EOLR-1 End-Of-Line

17% off

The Fire Alarm Supplier

System Sensor EOLR-1 End-Of-Line

FIRENOTIFIER.COM, LLC

System Sensor B210LP

Next Security Corp

2WTR-B SYSTEM SENSOR

FIRENOTIFIER.COM, LLC

Siemens HTRI-S Single Input Monitor Module

System Sensor 5251B

FIRENOTIFIER.COM, LLC

System Sensor 5251B

System Sensor B114LP Series Relay Base 4-Wire

17% off

The Fire Alarm Supplier

System Sensor B114LP Series Relay Base 4-Wire

Fire-Lite Alarms MS-10UD-7

FIRENOTIFIER.COM, LLC

Fire-Lite MS-10UD-7 (10-Zone FACP + DACT) with Cabinet

Mircom MIX-2351AP Addressable Photoelectric Smoke Sensor

17% off

The Fire Alarm Supplier

Mircom MIX-2351AP Addressable Photoelectric Smoke Sensor

Edwards GSA-T3T4

FIRENOTIFIER.COM, LLC

Edwards GSA-T3T4

Edwards EST SIGA-SD

FIRENOTIFIER.COM, LLC

Edwards EST SIGA-SD Intelligent Duct Smoke Detector

System Sensor 2WTA-B Smoke Detector 2-Wire

17% off

The Fire Alarm Supplier

System Sensor 2WTA-B Smoke Detector 2-Wire

FIRENOTIFIER.COM, LLC

System Sensor 4WTAR-B

System Sensor 4WTAR-B Smoke Detector and Thermal Sensor

17% off

The Fire Alarm Supplier

System Sensor 4WTAR-B Smoke Detector and Thermal Sensor

System Sensor HWL2-LF Wall Mount Sounder, Low Frequency, White

17% off

The Fire Alarm Supplier

System Sensor HWL2-LF Wall Mount Sounder, Low Frequency, White

FIRENOTIFIER.COM, LLC

Edwards EST SIGA-CT2

System Sensor SS-PHOTO Intelligent Photoelectric Smoke Detector

17% off

The Fire Alarm Supplier

System Sensor SS-PHOTO Intelligent Photoelectric Smoke Detector

Kidde KI-OSD Intelligent Optical Smoke Detector

FIRENOTIFIER.COM, LLC

Kidde KI-OSD Intelligent Optical Smoke Detector

System Sensor SS-PHOTO-CO Multi-Criteria Photo and Carbon Monoxide Detector

17% off

The Fire Alarm Supplier

System Sensor SS-PHOTO-CO Multi-Criteria Photo and Carbon Monoxide Detector

System Sensor D4120W Duct Smoke Detector 4-Wire

17% off

The Fire Alarm Supplier

System Sensor D4120W Duct Smoke Detector 4-Wire

Silent Knight 005860TG

FIRENOTIFIER.COM, LLC

Silent Knight 005860TG

System Sensor D4120 Duct Smoke Detector

17% off

The Fire Alarm Supplier

System Sensor D4120 Duct Smoke Detector

FIRENOTIFIER.COM, LLC

System Sensor 2251B Intelligent Photoelectric Smoke Sensor

FIRENOTIFIER.COM, LLC

Notifier FTM-1 Firephone Control Module

SYSTEM SENSOR HWL-LF

FIRENOTIFIER.COM, LLC

SYSTEM SENSOR HWL-LF

FIRENOTIFIER.COM, LLC

System Sensor SPSCR Speaker Strobe, Ceiling, Red, Std Candela

FIRENOTIFIER.COM, LLC

System Sensor HGWL-LF

System Sensor 2WT-B

FIRENOTIFIER.COM, LLC

System Sensor 2WT-B

System Sensor 2WT-B Two Wire Smoke Detector With Built-In Heat Sensor - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor 2WT-B Two Wire Smoke Detector With Built-In Heat Sensor

System Sensor 2351B Photoelectric Smoke Detector

17% off

The Fire Alarm Supplier

System Sensor 2351B Photoelectric Smoke Detector

System Sensor B300-6-BP 6 Inch Detector Base 10 Pack

17% off

The Fire Alarm Supplier

System Sensor B300-6-BP 6 Inch Detector Base 10 Pack

System Sensor B114LPBT 24VAC/DC Detector Base

17% off

The Fire Alarm Supplier

System Sensor B114LPBT 24VAC/DC Detector Base

System Sensor PC2WLED LED Horn Strobe, Ceiling, White, “FIRE”

FIRENOTIFIER.COM, LLC

System Sensor PC2WLED LED Horn Strobe, Ceiling, White, “FIRE”

System Sensor 2W-B Two Wire Smoke Detector - AlarmSystemStore.com

AlarmSystemStore.com

System Sensor 2W-B Two Wire Smoke Detector

System Sensor 4WTR-B Smoke Detector and Thermal Sensor 4-Wire

17% off

The Fire Alarm Supplier

System Sensor 4WTR-B Smoke Detector and Thermal Sensor 4-Wire

System Sensor RTS151KEY Remote Resting Station

17% off

The Fire Alarm Supplier

System Sensor RTS151KEY Remote Resting Station

System Sensor B501 Intelligent Plug-In Detector Base

17% off

The Fire Alarm Supplier

System Sensor B501 Intelligent Plug-In Detector Base

Silent Knight SD500-AIM Addressable Input Module - USED

FIRENOTIFIER.COM, LLC

Silent Knight SD500-AIM Addressable Input Module

Acomplis Technology

6500-2104 Smoke Detector, 60 min

BRK SC9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup

14% off

RES LLC Store

BRK SC9120B Hardwired 120V Smoke/CO Combo 9V Battery Alarm

(3)

Notifier FCO-951

FIRENOTIFIER.COM, LLC

Notifier FCO-951