ZKTeco WDB04 wireless doorbell with 38 chimes, 4 volume levels, and stable 433.92MHz signal for access control use.
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> Simple and convenient installation with the ergonomic design.
> Adopt ASK superheterodyne co-frequency code technology, which can effectively minimize interference and secure doorbell connection.
> The wireless doorbell has low power consumption and can prolong the battery life.
> Reliable operating frequency at 433.92MHz
> Adopt ASK superheterodyne co-frequency code technology, which can effectively minimize interference and secure doorbell connection.
> The wireless doorbell has low power consumption and can prolong the battery life.
> Reliable operating frequency at 433.92MHz