| Video door phone building intercom special products (support all IP Video door phone building intercom brands) |
| 24V (power supply mode: 45+, 78-) |
| dip switch to select transmission 100m or 250m |
| housing with wall mounting hole position, convenient installation. |
| Warm tip: pay attention to the order of the connectors of the power supply network cable - straight-through mode; (optional upstream 1 gigabit optical port, standard control sharpener) |
| with protection power supply function |