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

Fair price fast delivery.

We own storage units and live next door. This is wired to ding whenever someone drives into the business so we can take a look at who has come onto the property. Works perfectly.

have two of the same units --so I new it was A good product

This is a replacement receiver for and Optex driveway alarm that was 20 years old. The quality is remarkable, the 9 volt battery last forever, and we really appreciate knowing when someone comes through our gate. There are false alarms like when a gecko decides to check out the funny looking device.

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

Good product good company

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

does the job, Watchout for the sun.

Works. Just had to follow the instructions, since this required programming the receiver with each specific sensor unit to enable its operation. As in past use, I also painted my own drab camo coloring on the sensor unit to make it “hide” in the front yard foliage by my driveway where I park the unit (photo). It’d be nice if they just came in that color already. That last one I had lasted almost a decade despite permanent exposure to sun and rain outdoors (along with getting kicked around occasionally by night animals).

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.