Wireless Motion Detector Security Doorbell Alarm

Package Includes: 1 Receiver, 1 PIR Sensor, 1 Base for PIR Sensor Installation, Wall Plugs, Screws, Screwdriver, and Instruction Manual. Operating Range: 300m/1000ft (without obstacles) Detecting Distance: up to 6 meters/ 24ft Detecting Angle: 30-60 degrees (Adjustable) Receiver Power : DC 4.5V (3 x AA batteries or by an adapter) PIR Sensor Power: DC 4.5V (3 x AAA batteries) Working Temperature: -4℉ - 113℉ Volume Levels: LOUD & 6 adjustable volume levels Expand: Up to 16 sensors/base