F Murtz wrote in message
nd.com...
What would the cheapest way to protect a sensor light from spikes?
I live out of the city and when the power drops out every so often the
sensing portion of sensor light blows, But the spikes are not enough to
damage anything else.Keep replacing sensor lights.
This time I might investigate sensor circuit and see what is faulty.

PIR sensor ?
There is some safety routine that applies to some such PIR in the event of a
powercut , they have to be reset, find the instruction manual