Fire-Lite CDRM-300 Addressable Dual Relay/Monitor ModuleThe Fire Lite CDRM 300 is a dual relay monitor module that receives direct SLC loop power and requires no external power supply. Designed for two wire loops and Fire Lite Fire Alarm Control Panels, the module includes two relay control modules and two Class B monitor modules. The relay outputs are meant for Form C switching and the monitor inputs are used for interfacing between normally open contact devices and fire alarm control panels.