One of my two Garadgets is producing false door opening alerts when the door is closed. The laser is hitting the reflector squarely, giving a sensor reading of ~86. When a false alert is issued for the door opening, the sensor shows a reading that varies from 2-8 and the laser spot is just barely visible on the reflector. After a random time from a second or two to as much as a minute, the laser returns to full brightness and the sensor reading returns to 86 or more.
This behavior happens randomly through the day and night. Sometimes it generates a single opening-closed pair of alerts. At other times it generates a string of 10 or more pairs of alerts in only a few seconds.
Does the device need to be replaced?