Expand your Yale Smart Alarm System flexibly with wireless intrusion detectors for your doors and windows. With the Yale intrusion warning sensor, you can monitor the opening of any door and window in your home and be alerted to potential break-ins before they occur, thanks to its vibration and impact sensors. When the alarm is armed, you will be immediately notified via real-time alerts on the Yale Home App as soon as the status of the sensor changes. At the same time, the Yale alarm system will scare off intruders with a loud siren. With its slim profile, this sensor is ideal for tight spaces and blends seamlessly into your home's decor. It can be easily and flexibly mounted in the desired location using the included installation materials, either by screws or adhesive pads.