Fireboy-Xintex CO Alarm Relay Control Module [RCM5]CO Alarm Relay Control Module The RCM5 is a Relay Control Module. It allows you to automatically deactivate devices based on the status of the connected Xintex detection device. The RCM5 uses a signal provided by the connected Xintex device to activate the internal relay. This allows you to shutdown generators or other devices automatically. Compatible With: Interconnect models only Technical Specifications: Material Flame retardant ABS plastic