System Sensor COSMO-4W i4 Series, 4-Wire CO and Smoke Combination Detector
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Key Features
- Dual-hazard protection (photoelectric smoke + electrochemical CO) for faster, more accurate detection and fewer false alarms
- 4-wire COSMO-4W interface simplifies integration — supports up to 12 detectors while using only 2–3 panel zones to reduce panel I/O
- Interconnected alarm sounders ensure whole-building audible notification when any unit senses smoke or CO for maximum occupant safety
- LED status indicators and EZ Walk test support proactive maintenance and quick on-site troubleshooting to minimize downtime
- UL-listed sensing technologies and 24V DC compatibility deliver reliable performance for residential and light-commercial fire/security systems
- Surface-mount friendly design and durable SEMS screw terminals speed installation and service, lowering labor costs and project timeframes
Quick Specifications
- Product Model
- COSMO4W
- Brand Name
- System Sensor
- Product Name
- Carbon Monoxide (CO)/Smoke Detector
- Product Type
- Gas/Smoke Detector
Frequently Bought Together
System Sensor COSMO-4W i4 Series, 4-Wire CO and Smoke Combination Detector
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Total: $290.07
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Product information
COSMO-4W
Overview
Protect occupants and property with a single, easy-to-integrate solution: the System Sensor COSMO-4W i4 Series 4-Wire CO and Smoke Combination Detector. Designed for contractors and integrators, this combination detector pairs photoelectric smoke sensing with electrochemical CO monitoring to deliver accurate dual-hazard detection and reduce nuisance alarms. The COSMO-4W interfaces with fire panels using only 2–3 zones (smoke, CO and optional trouble), allowing up to 12 detectors per module — saving valuable panel inputs and simplifying system design.
Built for security and monitoring applications, the module interconnects detector sounders so a single alarm triggers building-wide notification. LED status indicators, EZ Walk loop testing, and robust 24V DC wiring with SEMS screw terminals speed installation and maintenance on retrofit and new-build jobs. UL-listed sensing (UL 268 & UL 2075) ensures code-compliant performance you can trust.
Specify the COSMO-4W for residential and light-commercial fire alarm, security, and surveillance systems where reliable, integrated smoke and CO monitoring is required. Order now to streamline installation and enhance occupant safety.
Features
- Dual-hazard protection (photoelectric smoke + electrochemical CO) for faster, more accurate detection and fewer false alarms
- 4-wire COSMO-4W interface simplifies integration — supports up to 12 detectors while using only 2–3 panel zones to reduce panel I/O
- Interconnected alarm sounders ensure whole-building audible notification when any unit senses smoke or CO for maximum occupant safety
- LED status indicators and EZ Walk test support proactive maintenance and quick on-site troubleshooting to minimize downtime
- UL-listed sensing technologies and 24V DC compatibility deliver reliable performance for residential and light-commercial fire/security systems
- Surface-mount friendly design and durable SEMS screw terminals speed installation and service, lowering labor costs and project timeframes
| General Information | |
|---|---|
| Brand Name | System Sensor |
| Manufacturer | Honeywell International, Inc |
| Product Name | Carbon Monoxide (CO)/Smoke Detector |
| Product Type | Gas/Smoke Detector |
| Product Model | COSMO4W |
| Product Series | i4 |
| Country of Origin | MS |
| Manufacturer Part Number | COSMO4W |
| Technical Information | |
| Sensor Type | Photoelectric |
| Detectable Gas | Carbon Monoxide |
| Detectable Medium | Fire, Gas |
| Sensing Technology | Electrochemical, Photoelectric |
| Connectivity Technology | Wired |
| Certifications | |
| UL Listed | Yes |
| Certifications | UL 2075, UL 268 |
| Controls/Indicators | |
| Status Indicators | Yes |
| Physical Characteristics | |
| Color | White |
| Depth | 5.50" |
| Height | 2.50" |
| Weight | 9.20oz |
| Form Factor | Ceiling Mount |
| Power Description | |
| Input Voltage | 24V DC |
| Product Information | |
| Diameter | 5.50" |
| Mount Type | Ceiling Mount |
| Miscellaneous | |
| Compatibility | SENS-RDR sensitivity tester |
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Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- COSMO-4W
- Manufacturer part:
- COSMO-4W
How do I confirm compatibility?
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Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsSystem Sensor COSMO-4W i4 Series, 4-Wire CO and Smoke Combination Detector
COSMO-4W