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HF-3207AA With Interlocking Doorbell

With Interlocking Doorbell

1. Three-wire connection, with unlock function, can be equipped with access control.
2. There is a good consumer side tone circuit, intercom sound clear.
3. Effective intercom distance of more than 200 meters (2X0.8mm).
4. Aluminum outdoor unit with anti-oxidation and wear-resistant surface treatment, durable.
5. Indoor unit: L230mm × W90mm × H65mm
6. Door machine: L127mm × W95mm × H35mm
7. Weight: 1 kg / set
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