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System Sensor CO-REPL Replacement CO Cell for COSMO-2W and COSMO-4W Detectors
Key item features
- Extended Cell-Life: Features a 10-year CO cell life for prolonged operational reliability.
- Broad Detector Integration: Easily integrates up to 12 compatible detectors with a wide range of control panels.
- Versatile Module Compatibility: Available in 2-wire and 4-wire modules, compatible with COSMO-2W/4W combination detectors and 2WTA-B/4WTA-B smoke detectors.
- Distinct Signal Transmission: Sends distinct smoke and CO signals from i4 detectors to the control panel for clear event identification.
- Maintenance Indication: Provides LED indication for 2-wire detectors when cleaning or maintenance is required, and initiates the EZ Walk loop test.
- Interconnected Sounders: Module interconnects the sounders of all connected devices, eliminating the need for an RSS-MOD and offering optional trigger inputs.
- Simplified Installation: Mounts to a 4-11/16-inch square back box with terminal blocks and pre-drilled holes for quick and easy installation.
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Specs
- BrandSystem Sensor
- MaterialMetal
- Compatible modelsCOSMO-2W, COSMO-4W
- CompatibilityHoneywell
Current price is USD$54.65
Price when purchased online
- Free shipping
Free 30-day returns
How do you want your item?
Columbus, 43215
Arrives by Thu, Feb 12
|Sold and shipped by Fire and Safety Plus
4.538461538461538 stars out of 5, based on 143 seller reviews(4.5)143 seller reviews
Free 30-day returns
About this item
Product details
System Sensor CO-REPL Replacement CO Cell for COSMO-2W and COSMO-4W Detectors Product Overview Integration: The i4 module allows up to 12 i4 Series or compatible i 3 Series smoke detector models to be integrated into a fire alarm panel using only 2 to 3 zones: a smoke zone, a CO zone and an optional trouble zone. Detectors sound Temp 3 for smoke and Temp 4 for CO events. The i4 module can be used to alarm all sounders in compatible detectors for smoke and CO events. When one detector detects smoke or CO and goes into alarm, all connected detectors alarm, offering the highest level of warning to the homeowner. Installation ease: The i4 Series Interface Module mounts to a 411/16-inch square back box for quick and easy installation. Terminal blocks with durable SEMS screws ensure a reliable connection. It also has pre-drilled holes for easy mounting inside a metal enclosure Intelligence: The i4 Interface Module allows i4 and compatible i3 smoke detector models (2WTA-B and 4WTA-B) to communicate with any listed fire alarm control panel capable of utilizing this module. Instant inspection: The i4 Interface Module provides LED status indication for the loop, displaying normal operation, loop wiring fault, smoke events, smoke maintenance (2-wire only), CO events, and CO maintenance/end-of-life. The i4 Interface Module connects up to 12 detectors to a wide range of control panels using only 2 to 3 zones. It also interconnects the devices, so when one device alarms, they all sound. Main Features With 10-year CO Cell Life Easily integrates up to 12 compatible detectors to a wide range of control panels 2-wire module is compatible with COSMO-2W combination detectors and 2WTA-B smoke detectors. 4-wire module is compatible with COSMO-4W combination detectors and 4WTA-B smoke detectors. Sends distinct smoke and CO signals from i4 detectors to the panel LED indication shows when a detector on the loop requires cleaning or maintenance (2-wire detectors only) Initiates the EZ Walk loop test (2-wire detectors only) Module interconnects the sounders of all devices connected to it. No RSS-MOD is required. Optional trigger inputs are provided to sound multiple modules General Information Name: System Sensor CO-REPL Replacement CO Cell for COSMO-2W and COSMO-4W Detectors, Honeywell International, Inc, System Sensor Category: System Sensor, Fire, Fire Detection Devices, Detector Parts & Accessories UPC Code: 783863046179 Country of Origin: Mexico. Country of origin is subject to change.
- with 10-year CO Cell Life
- Easily integrates up to 12 compatible detectors to aWide range of control panels
- 2-wire module is compatible with COSMO-2W combination detectors and 2WTA-B smoke detectors.
- 4-wire module is compatible with COSMO-4W combination detectors and 4WTA-B smoke detectors.
- Sends distinct smoke and CO signals from i4 detectors to the panel
- LED indication shows when a detector on the loop requires cleaning or maintenance (2-wire detectors only)
- Initiates the EZ Walk loop test (2-wire detectors only)
- Module interconnects the sounders of all devices connected to it. No RSS-MOD is required. Optional trigger inputs are provided to sound multiple modules
info:
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Specifications
Brand
System Sensor
Compatibility
COSMO-2W and COSMO-4W Detectors
Material
Metal
Compatible models
COSMO-2W, COSMO-4W
Warranty
Warranty information
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Customer ratings & reviews
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Showing 1-2 of 2 reviews
Jan 11, 2026
akakk114
5 out of 5 stars review
Verified Purchase
This was easy to replace and got the smoke detector back to functioning. This was also a 10-year part instead of 5 like the part it replaced which is nice.
Helpful?3YKCTHOJWNKZ507665088
Aug 25, 2025
Vivek
4 out of 5 stars review
Verified Purchase
This product saved us from replacing the entire CO unit with just a simple swap with this sensor.
Helpful?3YKCTHOJWNKZ507665088
