General description This Wireless Doorbell Electric Door Chime Kit includes 1 Receiver and 1 PIR Motion Detector Sensor, providing a reliable visitor alert and security alarm system. With customizable alerts and easy installation, it is perfect for homes, offices, stores, hotels, and other buildings. The system is designed to notify business owners when customers enter the store or to signal when pets are ready to enter or exit. Technical specifications Receiver Working Voltage: 110V-240V PIR Sensor Working Voltage: 4.5V (3 AAA batteries) Receiver Size: 76x80x33 mm PIR Sensor Size: 80x59x45 mm Packing Size: 10x9x9 cm Weight: 0.16 kg Effective working range: Up to 70 meters PIR motion detection distance: 3-7 meters Volume levels: High, Medium, Low Ringtones: 38 different melodies Installation Insert 3 AAA batteries into the sensor, ensuring correct placement. Mount the sensor near the front door, window frame, driveway, walkway, or other desired locations. Turn on the receiver and