1. Wireless doorbell to alert you when guests arrive with a selection of pleasant melodies. 2. Choose from 38 different chimes, easily changed with the press of a button. 3. Simple to install—place the sensor at your entrance and the receiver indoors. 4. Ideal for use in homes, offices, hotels, stores, and other locations. 5. Detects movement at entryways, including people, vehicles, or animals approaching or leaving. Receiver operating voltage: 110V–240V Transmitter operating voltage: 4.5V (3x AAA batteries, not included) Working range: up to 70 meters Infrared detection distance: 3–7 meters Button control receiver: Music source: 38 different songs Volume adjustment: high, medium, low Sound and light settings: configurable for sound with light or light only How to use: 1. Insert the correct batteries into the detector. 2. Ensure batteries are placed in the proper orientation. 3. Mount the detector near the front door, window frame, walkway, yard, or other desired location. 4. Turn on the receiver and adjust the volume to the desired level. 5. The system operates using infrared detection technology. 6. Place the receiver in a convenient indoor location. 7. When motion is detected, the receiver will sound an alert and the LED light will flash. 8. Allow 30 seconds after installation for the detector and receiver to activate. 9. Install both units at least 3 feet above ground level for best performance. Plug Type: EU Plug, compatible with countries including Germany, France, Spain, Italy, and Indonesia Size: 76 x 80mm Material: ABS Color: White Voltage: AC220V Package Contents: 1 x PIR Sensor 2 x Receiver Note: Light reflection and display differences may cause slight variations in the item's color as seen in images.