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

We use these to signal that help is needed in different rooms in our facility, they always work well. The manufacturer was quick to give advice on a technical question too.

This is an awesome company with a great product, and even greater tech support.

Fair price fast delivery.

I have three of these now...they really work great. We live at the end of the road and back up to the National Forest. I have one receiver on the upper floor, one on the basement floor, and that allows us to hear it on the main floor as well as the other two. I have two of the transmitters set up in fake bird houses along the long drive and it picks up vehicles as well as large animals. Another transmitter is mounted covering the width of the rear of the house, and this alerts us to bears on the wrap-around porch. I have this receiver and a fourth transmitter covering the access road to my shop and boat, and this is at my sisters house a mile away. You cant go wrong with these!

Excellent product

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.