This is a PDF file about YA2S-212CD8S7 product
The WRT‑RI smart intercom system consists of a building host, user extensions, a management computer and auxiliary equipment. The YA2S‑2120D8S7 extension can be wall‑mounted or recessed, supports visual communication, remote unlocking, alarm zones and messaging.
This guide provides safety precautions, step‑by‑step mounting instructions using an 86‑box at approximately 145 cm height, wiring details, operation functions such as call handling and door unlocking, and basic troubleshooting tips. This manual is written in Chinese.
Mount the visual extension at a comfortable eye level, recommended around 145 cm from the floor.
During a call, press the unlock key (marked “蕉”) to open the door lock.
All connections should be double‑checked and verified correct before applying power.