Power supply | Self power, battery free | ||
Working Frequency | 433MHz | ||
Distance Of Transimission | Oprating range(No obstacles)≥150M | ||
Music | 38 Melodies | ||
Ringtone Volume: | ≥50dB/m, about one metre | ||
Working Temperature: | Doorbell transmitter-20℃/-5℉~+60℃/+140℉ | ||
Doorbell receiver-10℃/+13℉~+45℃/+105℉ | |||
Product Weight | Doorbell transmitter:52g / Doorbell receiver:59g | ||
Product Size | Doorbell transmitter80*50*28mm | ||
Doorbell receiver95*53*49mm |