- Operating range up to 100 meters in the open area

- Using high frequency transmit technology and innovative function of same frequency with different code, one doorbell has one code to avoid disturbing from neighborhoods

- 30 melodies

- Receiver Battery: 2 x AA (not included)

- Transmitter Battery: 1x3V CR2032 (included)

- N.W. of Receiver (doorbell): 81g

- N.W. of Transmitter (button) :28.28g

- Approval: CE, RoHS

- Radio Frequency: 433.92MHz

- Waterproof of transmitter: IP44