Do glassbreak sensors work in unheated spaces like garages?

Hi rjwolfsr,

The main thing all of those sensors have in common is that they're battery powered. So in terms of environment, that would be the limiting factor. Lithium batteries don't do well in extreme cold, so you might get some decreased performance or lower than expected battery life.

Otherwise, the Entry Sensor works by a magnetic switch, so it can work at any temperature.

The Motion Sensor works by passive infrared,  i.e. by detecting a contrast in heat. So in extreme cold, even small heat sources could appear much larger, and that might result in some false alarms.

And finally, the Glassbreak Sensor is a non-recording microphone, which again works just fine in colder temperatures.

Thank you.  I couldn't find any information about using the glassbreak sensors in a colder environment, so your answer is very helpful.

FYI, according to https://simplisafe.com/files/pdf/instructions/manual_ss3_12_05.pdf here are the operating temperature/humidity ranges for SimpliSafe Gen3 equipment at the time the manual was created. It seems like , officially, the sensor will work just fine until it drops below freezing. Aside from Davey's comment above re: battery life in cold weather it's likely the sensors effectiveness may diminish or cease entirely as the temperature drops further below freezing. 

Hope this helps to add some confidence on top of Davey's response. Please note that I created and populated the table manually but the raw data is below the table as well as on document page 21 of the PDF linked above.

Base Station: Model SSBS3 Operating Temperature 32°F to 104°F, 90% Max. Humidity
Keypad: Model SSKP3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Keyfob: Model SSKF3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Entry Sensor: Model SSES3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Motion Sensor: Model SSMS3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Panic Button: Model SSPB3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Glassbreak Sensor: Model SSGB3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Smoke Detector: Model SSSD3-0 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Carbon Monoxide Detector: Model SSCO3-0 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Water Sensor: Model SSWT3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Freeze Sensor: Model SSFS3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
Extra Siren: Model SSWS3 Operating Temperature 32°F to 120°F, 90% Max. Humidity
SimpliCam: Model SSCM1 Operating Temperature 14°F to 104°F, 90% Max. Humidity

Thanks for this information.  It really helps.