Ooma Door and Window Sensor, works with Ooma Smart Home Security. No contracts and free self-monitor plan. Optional professional monitoring, motion, keypad, water sensor, and garage door sensor

Product Description
Connect the ooma home door or window sensor to your ooma Telo (not included) to monitor your home from anywhere. Receive app notifications and phone call, text or email alerts when activity is detected. Manage and configure your sensor and set alerts with the ooma home security mobile app. Combine with motion and water sensors (available separately) for complete home monitoring.