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A Video Door Phone is a security device that allows residents to see, speak to, and optionally unlock the door for visitors via a camera-equipped outdoor unit and an indoor display monitor. It enhances entryway security for homes, apartments, and offices.
| Spec | Typical Values |
| Display Unit | 4"–10" LCD/LED screen |
| Camera Resolution | 480p to 1080p (depending on model) |
| Audio | Two-way communication (built-in mic & speaker) |
| Night Vision | IR LEDs for low-light visibility |
| Connectivity | Wired (2-wire/4-wire), IP (for smart models) |
| Power Supply | AC adapter or PoE (for IP units) |
| Unlock Function | Integrated door lock control (electric strike) |
| Expandability | Support for multiple monitors/cameras |
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