Gentex CR 918-0036-002 120V Carbon Monoxide Alarm Relay

The Gentex CR (918-0036-002) is a 120VAC electrochemical carbon monoxide alarm designed for single-station or interconnected operation in residential and dwelling-unit applications. Featuring a 9V alkaline battery backup, 85 dBA audible horn, and Temporal 4 carbon monoxide warning signal, the alarm provides CO detection during normal operation and power outages. The CR includes Form A and Form C relay contacts for auxiliary signaling, DUALINK interconnection capability, and ANSI/UL 2034 listing.

Gentex CR 918-0036-002 120VAC Carbon Monoxide Alarm with Relay

The Gentex CR (918-0036-002) Carbon Monoxide Alarm is a hardwired CO detection device designed to warn occupants of hazardous carbon monoxide concentrations in homes, apartments, hotels, motels, and other dwelling-unit applications. Part of the Gentex C Series, the CR uses electrochemical carbon monoxide sensing technology to monitor CO levels and activate an audible warning when alarm thresholds are reached. Its integrated 85 dBA piezoelectric horn produces a Temporal 4 evacuation signal to distinguish carbon monoxide warnings from smoke and heat alarms. Unlike the standard Gentex C model, the CR includes auxiliary relay contacts for connecting compatible remote signaling equipment.

The Gentex CR operates on 120VAC, 60 Hz primary power with a 0.055-amp operating current and uses a replaceable Duracell MN1604 9V alkaline battery for secondary power during electrical outages. The alarm includes one Form A and one Form C auxiliary relay contact for applications requiring remote annunciation or auxiliary equipment activation. The relays remain operational on battery backup, and the unit supports programmable relay operation. Additional functions include an 8-hour alarm memory, push-button self-testing, a low or missing battery indicator, and a 10-year end-of-life indicator. A green LED indicates AC power, while a red LED provides periodic operating-status indication.

The Gentex CR carbon monoxide alarm supports single-station installation or multiple-station interconnection using the manufacturer's DUALINK tandem interconnect technology. Compatible Gentex smoke, heat, carbon monoxide, and combination smoke/CO alarms can be interconnected to provide coordinated audible warnings throughout a protected dwelling. When a connected carbon monoxide alarm activates, compatible interconnected units produce the Temporal 4 warning pattern; smoke alarm activation triggers the Temporal 3 pattern. The CR is also compatible with specified Gentex CO1209, S1209, and GN-503 Series devices, supporting replacement and expansion of existing alarm networks. The CR provides carbon monoxide detection only and does not contain an integrated smoke or heat sensor.

Designed for wall or ceiling installation, the Gentex CR 918-0036-002 measures 5.5 x 5.5 inches overall with a 1.75-inch depth and accommodates standard electrical junction boxes through its universal mounting hardware. A quick-disconnect wiring harness simplifies installation and servicing, while the front-loading battery drawer provides access for battery replacement. The alarm operates in ambient temperatures from 40 F to 100 F (4 C to 38 C) and is ANSI/UL 2034 listed for residential carbon monoxide alarm applications. Gentex provides a one-year manufacturer warranty from the date of purchase. The CR is also identified as a replacement for the Gentex CO1209F, subject to verification of wiring harness and system compatibility.