Wireless Motion Sensor instantly detects motion in interior rooms and spaces (battery included). Easily monitor activity from inside your home or remotely via your smartphone and tablet. Also receive alerts on your smartphone and tablet or via the system's cordless handset. Simple DIY installation and one-touch pairing with Hub unit. Use motion sensor to trigger other actions such as trigger indoor or outdoor camera to start recording or program the cordless handset to dial a pre-programmed phone number. No monthly fees with this component system.