Merlin Gerin Multi 9 Ic 2000 P Manual -

Ensure a nearby security light or streetlamp isn't accidentally illuminating the sensor cell.

Ensure the main power supply is isolated before making any physical connections to the device. Merlin Gerin Multi 9 Ic 2000 P Manual

After digging through archives, here are the three most vital specs you need: Ensure a nearby security light or streetlamp isn't