System Sensor COSMO-4W 4-Wire Combination CO/Smoke Detector with Sounder
The System Sensor COSMO-4W is a hardwired 4-wire combination carbon monoxide and smoke detector featuring an integrated sounder, engineered for conventional fire alarm control panel architectures. Unlike separate CO and smoke detectors that require two device connections, the COSMO-4W consolidates dual life-safety sensing into a single mounting location—reducing installation labor, wiring runs, and overall system footprint while maintaining independent sensor operation for each hazard type.
Key Features
- Dual-Sensor Design (CO + Smoke): Combines independent carbon monoxide and ionization smoke detection in one unit, eliminating the need for two separate detectors on a single loop. Simplifies wiring diagrams and cuts installation time on multi-floor or multi-zone deployments.
- 35VDC Operating Voltage: Operates on standard 4-wire circuit voltage, compatible with conventional fire alarm control panels that do not require PoE or low-voltage DC supplies. Typical hardwired panel designs already provide this supply, so no auxiliary power module is needed.
- Integrated Sounder: Built-in audible alarm output eliminates the cost and mounting complexity of separate sounders. Important in open-plan spaces (warehouses, retail, office atriums) where local notification must reach all occupants without relying solely on remote panel buzzers.
- 4-Wire Conventional Loop Architecture: Designed for standard supervised alarm loops. Each detector occupies one address or zone on the control panel. Pairs with traditional panel modules without requiring IP networking, gateway devices, or specialized ONVIF drivers—a decisive advantage if your infrastructure lacks Ethernet runs to all detection points.
- Independent Sensor Alerting: CO and smoke sensors operate independently. If one sensor triggers, it does not block the other. Critical in mixed-hazard spaces (kitchens in commercial buildings, garages adjoining occupied areas) where false alarms from one sensor type should not mask detection of the other.
- Compact Form Factor: Single-point installation reduces visual clutter on ceilings and walls compared to two separate devices. Relevant in aesthetic-sensitive environments (hospitality, healthcare, retail) where multiple white or chrome detectors can appear cluttered.
Deployment Context
The COSMO-4W is purpose-built for facilities that operate conventional (addressable or non-addressable) hardwired fire alarm systems. It is not an IP camera or networked sensor; it does not integrate with Video Management Systems or enterprise security ecosystems that rely on IP networking. Deploy this device where your primary requirement is dual life-safety detection using existing 4-wire alarm infrastructure. Suitable for commercial buildings, warehouses, institutional facilities, and retrofit installations where running new Ethernet drops is impractical.
If your facility is transitioning to IP-based fire detection with cloud dashboard integration or analytics-driven alerts, you will need a networked detector platform instead. If your control panel expects a different voltage (e.g., 24VDC or 12VDC) or uses analog relay loops, verify compatibility with your panel's power and signaling specification before ordering.
Integration & Compatibility
The COSMO-4W integrates with standard 4-wire fire alarm control panels from major manufacturers (Notifier, Edwards, Honeywell, Siemens, etc.) that support conventional loop wiring. Consult your panel documentation to confirm the voltage and loop capacity match your system design. The detector does not require configuration software, IP addressing, or cloud connectivity—it operates as a passive supervised device on the alarm circuit.
Frequently Asked Questions
Q: Can I install the COSMO-4W on an IP-based fire alarm system?
A: No. The COSMO-4W is designed for conventional 4-wire hardwired systems. IP-based systems use networked detectors with Ethernet connections. Confirm your control panel is a conventional (non-IP) model before ordering.
Q: What is the sounder output level?
A: The integrated sounder is designed to provide local audible notification in occupied spaces. Refer to the product datasheet for specific dB output at standard distances. For very large open spaces, you may need to supplement with a separate external sounder.
Q: Do I need a special power supply for the COSMO-4W?
A: No. The detector operates on 35VDC, which is the standard supervised loop voltage supplied by conventional fire alarm control panels. No auxiliary power supply is required.
Q: Is the COSMO-4W suitable for outdoor mounting?
A: Consult the product datasheet and your local fire code for environmental ratings and outdoor suitability. Some jurisdictions restrict outdoor detector placement; others require weatherproof housings. Verify before installation.
Q: Can both sensors trigger simultaneously?
A: Yes. The CO and smoke sensors operate independently. If both hazards are present, both will signal the control panel at the same time. The panel will log and display both alarms.
Q: What is the warranty period?
A: Consult the product datasheet or contact the manufacturer for warranty terms. Fire alarm devices often carry 2–5 year limited warranties; your specific coverage depends on the manufacturer's policy and your purchase agreement.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The COSMO-4W delivers practical value in hardwired fire alarm upgrades where you need both carbon monoxide and smoke detection without splitting your loop capacity across two separate devices. The 35VDC operating voltage is standard across most conventional panels, so integration is straightforward—no voltage conversion or power supply surprises.
Technical Highlights:
- Dual Independent Sensors: CO and smoke detection operate in parallel. If kitchen equipment triggers the smoke sensor, the CO sensor continues monitoring independently—critical in mixed-use spaces where false alarms from one hazard type should not mask the other.
- Integrated Sounder: Eliminates the cost and mounting labor of a separate sounder module. In an open warehouse or retail environment, that sounder ensures occupants hear the alarm locally, not just at the panel desk.
- 4-Wire Loop Efficiency: One device address replaces two on your control panel. If you are expanding detection into new zones but the panel is near capacity, consolidating CO and smoke detection into a single point is a practical way to extend coverage without a panel upgrade.
Deployment Considerations:
- This detector is not networked. If your strategic goal is IP-centric fire detection with cloud dashboards or event-driven VMS integration, you will need a different platform. The COSMO-4W is analog-loop only.
- Sounder coverage in very large spaces (multi-story atriums, vast open warehouses) may require supplemental external sounders. The integrated sounder is designed for typical room coverage, not warehouse-scale distances.
- Verify your control panel supports 35VDC loop voltage and can address the detector on a conventional zone. Legacy panels or systems upgraded piecemeal sometimes use different voltage standards.
Deploy the COSMO-4W when you are upgrading or expanding a conventional hardwired fire alarm system and want to consolidate dual-sensor life-safety detection at a single point. It is the right fit for retrofit installations in commercial real estate, storage facilities, and institutional buildings where re-running Ethernet backbone is not feasible and your panel infrastructure is already in place.
