Tyco DIM800 Input Module Front Cover is designed to accommodate the DIM800. The DIM800 is supplied as an open PCB with mounting hardware and EOL resistor and must be fitted in a suitable enclosure. It may be mounted on a gear plate using plastic standoffs or to an M520 Ancillary Cover and K2142 backbox. The K2142 mounting box provides a convenient surface mounting enclosure and the M520. The DIM800 Detector Input Module interfaces two collective detector circuits onto the MX addressable loop. Each circuit can support 3mA of detector current and requires a 4k7 Ohm EOL (End Of Line) resistor. The DIM800 requires a suitably rated external 24V supply to power the detector circuits. A switched 24V output is provided to power detectors that have separate power supply terminals. The two circuits are mapped to the same addressable point; either circuit in alarm will put the point into alarm. Unused circuits must be terminated with an EOL.