Doorbell Series

SummaryD18 Control furthest distance 100 m Four beep: Ding Dong, ring tones, music, music Frequency: 433.92 MHz or 315 MHz Easy to install, no wiring and AC Digital coding, wireless signals to prevent misuse sound Wireless communications organizations in compliance with international standards of design Transmitter, the receiver alone separate email:hn_oxworld.cn msn: emily.61_live.cn SummaryD28 Farthest distance control over 100 m Two kinds of noise: Ding Dong, music Frequency: 433.92 MHz or 315 MHz Easy to install, no wiring and AC Digital coding, wireless signals to prevent misuse sound Wireless communications organizations in compliance with international standards of design Transmitter, the receiver alone separate SummaryD38 Farthest distance control over 100 m Two kinds of noise: Ding Dong, music Frequency: 433.92 MHz or 315 MHz Easy to install, no wiring and AC Digital coding, wireless signals to prevent misuse sound Wireless communications organizations in compliance with international standards of design Transmitter, the receiver alone separate