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Wireless doorbell
1.The wireless doorbell with DC power operated.
2.Easy to install,wire free.
3.The distance up to 80 meters with music 36 tunes available.
4.Different painting available.
5.PCB manufacturing by SMT machine which ensure a stable quality.
6.Auto-Learning code function to ensure interference code builds unique connection between receiver and buttons which block interference from outside signal.
7.Power saving design with batteries of both receiver and transmitter can be used for 12 months.
Wireless doorbell QH-828A