Microwave Sensor in conjunction with Philips LCM system.

When motion is detected by the microwave sensor it closes a volt free contact, 2-core beldon goes back to an LCM which inturns switches and input, pulls in a mains contactor a brings on the lights(through bus-bar trunkin)
I need to install some sort of a pulse on and pulse off relay that can be connected between the volt free contact (sensor) and the LCM. Any info would be much appreciated.
Thanks
Paul

Sounds like you need a latching relay with a reset. You can do it easily with just 2 ordinary relays.