Multiple input, single output

I have four independent motion sensors - one on each side of the house.
What I want is for a single light to come on when ANY of the sensors is activated - either one sensor on its own, or perhaps even two at the same time, and for the light to go off when the sensor/s time out.

Is there a switch or relay or similar which will accommodate this, and if so what is it called (my searches have not come up with a solution)

Thanks

Easiest way is probably to use a separate relay for each input and then wire the contacts in parallel.

moguk said:

I have four independent motion sensors - one on each side of the house.
What I want is for a single light to come on when ANY of the sensors is activated - either one sensor on its own, or perhaps even two at the same time, and for the light to go off when the sensor/s time out.

Click to expand...

If the sensors all use relay switching (which standalone PIRs usually/often do) then, provided all are supplied from the same circuit, you could simply connect their 'outputs' ('switched lives') all together ('in parallel'), without needing any additional relay/whatever.

Kind Regards, John