This HOMESAFE WIRELESS HOME SECURITY MOTION SENSOR can detect motion from up to 8 meters away and has 110 degree motion detection angle. It has a wireless radio frequency range of 300 feet. When triggered the RF signal activates the alarm. Uses one 9-volt battery (not included). Easily protect every window and door of your home. The OUTDOOR HOMESAFE WIRELESS HOME SECURITY MOTION SENSOR can detect motion from up to 10 meters away and has an adjustable 150 degree motion detection angle. It has a wireless radio frequency range of 300 feet. When triggered the RF signal activates the alarm. Easily protect every window and door of your home. Comes with wall mount and requires 3 AA batteries not included. Can be used with the HA-SIREN and EWD-1