Motion Detector with Dusk to Dawn Barn Light

I'd search for a motion controlled lighting system which handles that power level.

I think @10 cents/ KWH it costs him about $15.00/ month to run 500 Watts of lighting !

I don't think most motion sensors can handle even 250 watts ! You might find it cheaper to run 2 Sensor/lamps rather than one sensor and a switched relay via the motion Sensor to increase the Power handling capability.

You might be able to rig a small (10/20) watt light next to the light sensor to over-ride the NIGHT sensor during observation times.

I think however telling him its costing him a couple hundred dollars a year to run the lights without the motion sensor will probably get his attention more than anything else !!!

Yukio YANO

Around here, 150W floodlights with built in motion sensors are very cheap. A bunch of them would quite likely be cheaper than a similar setup with single 500W light, plus you could get better area coverage by spreading them around the property.

Good point. ;^)

Your $ estimate is about right, and there are many people in our rural area that do have barn lights and run them all night. In fact, a local church has about 20 in their lot and they are on all year, and often well before dusk in the summer. Many people really don't care. Exactly how this light is helping my neighbor is questionable. The sad story is that when he moved in

fly

fair

Surely you can ge the equivalent of this on your side of the pond?

A bit of searching has found this at Home Depot - search for Store SKU #919160.

Bob