Optex RC-20U 3 Channel Receiver Chimebox w/ Relay

Bought this to set up another chimebox in the shop at my work. Works great

They work,!

Oh, it works great but after a while of the sheep passing by it one at a time it gets kind of old.

This system alarms every time the sun comes up, or goes down, and every time a cloud goes past the sun. Also, as the sun moves, the shadows cast by tall trees on the driveway trips the alarm. So on a intermittent cloudy day the two transmitters that I have are tripped almost continuously all day long. OptexAmerica says they are aware of the problem but have no solution. To be clear, it is not the sun hitting the transmitters, it is the general sunlight changing on the driveway surface. This system might work well indoors, but not anywhere thats sunny! Hard to believe, I agree! Works well at night.

put it by your driveway, back doors, near your car in the driveway and it will wake you up in the night to let you know something is moving around nearby. The batteries in the outdoor sensor last well over a year, though out all temps.

working good for my bussiness

Good product good company

good stuff

Works excellent used for 2 outdoor areas. It must be adjusted for distance from door. A few times the dogs trip it off. Great for security.

We needed to add a second chimebox to our system. Ordered this one and the ease of setup was amazing.