Wireless Motion Sensor Home Security Alarm w/ 1000 Ft Range

This bestselling driveway alarm provides a convenient and economic way to alert you when someone intrudes. When any object is detected, the PIR sensor sends a signal to the receiver unit from up to 300 meters away and you will be informed and on guard. The alarm in the receiver has a ring volume up to 100db with 3 alert choices (High volume chime / Low volume chime / Alarm) and 3 mode choices (Sound / LED Flash / Sound and LED flash). Communication range up to 300m / 1000ft (Distance from the sensors to the receiver/Alarm/Chime) And detection range up to 8m / 26ft (Distance from the sensors to the detected objects). Perfect for keeping you informed with a little warning before guests or intruders arrive. You can expand the alarm system for your home with up to 5 sensors for your request. Keep the PIR sensors in a clear path to the receiver and do not place the sensors where the wind will move them or change their detective angles so that you can get optimal performance. You can either use 3 X 1.5V type C batteries not included) or an AC power adapter (Not included) For the receiver, and 3 X AAA batteries (Not included) For the sensors. Never use type C batteries and AC power adapter at the same time.