Why does the monitor's red and green light keeps blinking
The red and green light keeps blinking on the monitor even though the door opens and closes without any problem
Building Materials - Chamberlain - UNIV GARAGE DOOR MONITOR
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Answers & Comments
Unplug, let it sit for a minute and plug back in. Ours does that when power is interrupted.
Do this POR first; it is easy. Then check the transmitter cell. Then consider the reset / relearn procedure. Distance and wall materials could be a factor.
Most likely you need to change the battery inside the sensor
The sensor is attached on your garage door and the battery is Lithium type 2032
0) POR as above.
1) Be sure the transmitter coin cell is good.
2) The base may have lost its knowledge of the transmitter. Follow the directions for reset and learning transmitter(s). A pdf can be found on line if you lost the instruction sheet.
Finding this product is now difficult. As a single purpose product, it is what most of us need. The current home automation craze will only offer wifi enabled devices boldly promoted in stores. Home automation still has security concerns.