- 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

- Receiver has 3 modes: visual, acoustic,visual and acoustic

- 18 melodies

- Blue LED indicator: 3pcs

- Transmitter has name plate

- Receiver Battery: 2xAA (not included)

- Transmitter Battery: 1x3V CR2032 (included)

- N.W. of Receiver (doorbell): 88g

- N.W. of Transmitter (button): 43g

- Approval: CE,RoHS

- Radio Frequency: 433.92MHz

- Waterproof of transmitter: IP44