While we were away a Thin door contact was reported ‘Open’ and set off an alarm. However, the door was not open, and subsequent inspection showed the sensor was not mechanically compromised. This is the first time in more than five years with GC2 panels in two different homes that this has happened.
Following the police report that all was OK I remotely rearmed the panel, so the door sensor that was reporting Open was automatically bypassed. Then in the logs I noticed that following the bypass notice the same sensor reported End of Tamper. (There was no Beginning of Tamper entry.) The panel remained armed with no further incident until we got home.
Now we are home today, and with the panel disarmed the same sensor suddenly started reporting multiple tampers. I pulled the cover, checked the internals, manipulated the tamper switch several times and buttoned it back up. For the moment it’s quiet.
So my questions are:
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If a door sensor has a false tamper while the panel is armed, will the panel interpret and log that as an Open, send an alarm, and then when the alarm is cleared log End of Tamper? (It looks like that’s what happened.)
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If 1 is true, then are these door sensors subject to false tamper indications? I’m trying to decide if I should just clean out the switch (compressed air) or replace the sensor.
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If 1 is false then should I replace that sensor simply because it falsely reported Open one time? I don’t know how frequently they might do this.
New batteries were put in about six weeks ago, so that shouldn’t be it.
Thanks in advance.
