CACAZI C1 Smart Home Wireless Remote Control Doorbell, Style:EU Plug Features: 1. The waterproof design of the transmitter effectively prolongs the service life of the product and is safe and secure 2. The receiver has 52 chord music, which can be adjusted in 4 levels 3. Long-distance barrier-free penetration of 300 meters, giving you a better experience Product parameters: 1. Material: ABS, electronic components 2. Power supply mode: AC 3. Power supply voltage: 110220 (V) 4. Receiver: with indicator light, button, and light on 5. Transmitter: 12V 23A battery x 1 (delivered with battery) 6. Music selection: 52 music 7. Volume selection: 4 levels of volume adjustment 8. Power consumption: 1 (W) 9. Scope of application: 300m 10. Dimensions: Transmitter: 6 x 3.4 x 1.5 cm, Receiver: 8.1 x 8.1 x 2 cm Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.