Features:
- Get instant mobile alerts when doors and windows open in your home with a Protect subscription (sold separately).
- Now smaller to enable increased placement options.
- Easy installation with no tools required.
- Mounts to door and window frames.
- Includes two 3V CR2032 batteries.
- Requires the Base Station.
- A Certified Refurbished Contact Sensor is refurbished, tested, and certified to look and work like new and comes with the same limited warranty as a new device.