hoco HI25 Home Low-Power Wireless Doorbell, Plug Type:EU Plug(White)

Transmitter: 1. Material: ABS 2. Dimensions: 70 x 40 x 11mm 3. Weight: 23g 4. Wireless Frequency: 433.92 MHz 5. Wireless Range: 150m (open area) 6. Battery Capacity: 210mAh/CR2032 7. Operating Time: 6 months 8. Standby Time: 18 months Receiver: 1. Input Voltage: AC 110-240V 2. Standby Power Consumption: Less than 3W 3. Material: ABS 4. Dimensions: 88 x 46 x 26mm 5. Weight: 42g 6. Wireless Frequency: 433.92MHz 7. Wireless Range: 20m (indoors) 8. Ringtones: 60