Cold air affect readings or sensors

[Kenneth_Beck]

bumchamp7 has a good point, but see previous message stream on the subject:

Sensor failure in cold

Last night I heard a very strange chirping sound out our back door. On further inspection, the sound was coming from the PA sensor. There was a (blue?) light flashing intermittently from the inside (mine is mounted high up, so I was looking from the bottom). I unplugged the sensor and the beeping stopped. At the time it was -3 DegF, it is now -9. Is there a temperature range beyond which the sensors will not work?