This article is about the All-New SimpliSafe system. If you purchased a system in 2017 or earlier, you have the Original SimpliSafe. If you're not certain which system you have, you can tell the difference here.
The following video walks through installing Glassbreak Sensors. If you are trying to add a new sensor to an existing system, please see this page.
NOTE: You can turn down the sensitivity of the glassbreak via the switch on the back of the sensor. Simply slide the glassbreak sensor off its bracket, and you will expose a small black switch. Slide it towards the "L" to lower the sensitivity.