hoco HI25 Home Low-Power Wireless Doorbell

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