This document describes the features and characteristics of the Intrusion | Entry Door Phone HC-3210/HC-3220 non-visual indoor unit, including fireproof and UV-resistant high-strength plastic casing, simple and stable design, etc.
The HC-3210 and HC-3220 are non‑visual indoor units for entry‑door intercom systems. They offer basic call functions, anti‑tamper and emergency alarm features, while the HC-3220 adds four‑zone anti‑theft protection and can be networked for large‑scale community use.
The guide describes installation requirements, including the use of a 4‑core communication bus, shielded signal cable and coaxial video cable, as well as power specifications, dimensions and expansion limits (up to four indoor units and two resident door stations). It also covers call operation modes such as called, call‑out and inter‑unit calls. This manual is written in Chinese.
| Power supply voltage | DC15V (±10%) |
|---|---|
| Standby power consumption | 1 W |
| Operating power consumption | 3 W |
| Dimensions (mm) | 74.5 × 100 × 30 mm |
| Housing material | Flame‑retardant ABS |
| Communication bus (cores) | 4‑core |
The intercom call lasts up to 90 seconds, and if the door‑open key is not pressed the system automatically ends the call after 30 seconds.
The HC‑3220 offers four zones: one delay zone, one 24‑hour zone, and two programmable zones.
The system can be expanded to a maximum of four indoor units and two resident door stations.
Signal lines must use twisted‑pair shielded cable, while video lines require coaxial cable; pairs are CTRL + PWR and AUDIO + GND.