Microwave Sensor Constantly or Randomly ActivatingUpdated 9 months ago

If your microwave motion sensor is constantly self-activating, it may be due to power-related or environmental factors.

1. Reduce the sensitivity to a minimum; this is controlled via the small dial on the sensor (visible when the cover of the sensor is taken off). Turn this fully counterclockwise to fully reduce the sensitivity. Only turn up this sensitivity as necessary.Hardwired Microwave Dial Location
2. Change the battery of your microwave sensor (if wireless). A low/dying battery can cause a microwave's sensitivity to increase. Be sure to use a 9V lithium battery.
3. Make sure to angle the sensor away from the door. The microwave has a conical field of detection - meaning that if the sensor is pointed straight down, it could detect the sliding panel's own motion while closing and re-open the door.
4. Remove any possible environmental factors. This would include anything that could be moving in the motion sensor's activation field - such as exterior tablecloths, leaves/plants, etc.