- Classic Wireless AC Plug-in Door chime

- Available plug: UK, Americal, Germany

- Learning code matching of chime and transmitter to avoid interference

- Wireless working range in 200 meters in open area

- 50 melodies to choose by door chime

- Select the interesting melodies on chime freely

- Sound volume can be adjusted in 4 level from 0dB to 80dB

- Frequency in 433MHz

- Power of chime by AC 90-240V

- Power of Transmitter by 1xCR2032 battery