General description The Wireless Doorbell Electric Door Chime Kit includes one receiver and two PIR motion detector sensors, providing a reliable visitor alert security alarm system. It features 38 melodies and three volume levels, ensuring you can customize your alert to suit your preferences. Technical specifications Receiver working voltage: 110-240V Transmitter working voltage: 4.5V (3 AA batteries) Working distance: up to 70 meters Transmitter detection distance: 3-7 meters Receiver size: 76*80*33mm Transmitter size: 80*59*45mm Installation Plug the receiver into a socket to turn it on. Open the battery cover of the detector and insert the battery. Place the rotating bracket on the back of the detector and secure it. Switch the detector to the ON position and wait 10 seconds for self-test before normal operation. Install the sensor at a height of about 2 meters for optimal detection. Avoid direct sunlight, rain, and proximity to metal objects during installation. Reduce