HC-3210/HC-3220 non-visual indoor units adopt a handset call mode and have features such as anti-theft functions, emergency alarm functions, simple programming methods, and the ability to connect to systems and expand connections.
The HC‑3210/HC‑3220 indoor units are non‑visual intercom devices with a high‑strength plastic housing, offering basic call functions, anti‑tamper protection, and emergency alarm features. The HC‑3220 model adds a four‑zone anti‑theft system and can be linked with visual units or used independently in villas or large communities.
Installation uses a back‑plane mounting method and a 4‑core communication bus. The units can be expanded to a maximum of four indoor units and two resident door stations, with wiring requirements for shielded twisted‑pair data lines and coaxial video lines. Power is supplied at DC15 V (±10 %). This manual is written in Chinese.
| Power supply voltage | DC15V (±10%) |
|---|---|
| Dimensions | 74.5 × 100 × 30 mm |
| Housing material | Flame‑retardant ABS |
| Maximum expansion | Up to 4 indoor units and 2 resident door units |
| Communication line | 4‑core bus |
The system can be expanded to a maximum of four indoor units and two resident door units.
The unit requires a DC15 V power supply with a tolerance of ±10 %.