- Transmission range: up to 30m
- Choose between two door chime tones: Ding Dong and Westminster
- Nominal voltage (Transmitter): 12V d.c.
- Frequency: 433.92 MHz
- Nominal voltage (Receiver): 4.5V d.c.
- Audio power: approx. 100dB
- Channel selection function: stops interference from neighbours who have the same door chime
- Digital coded technology: prevents false triggering or interference from other transmitters