The manual begins with safety precautions and emergency handling, explaining how to avoid electrical hazards, proper battery installation, and environmental requirements such as temperature limits. It then details the installation process, including power connection and optional call‑display service.
Subsequent sections cover normal operation of the telephone, key functions like call‑tone and backlight adjustment, battery replacement, and a simple troubleshooting guide for common issues such as a dim display or no sound. This manual is written in Chinese.
| Power source | Three AA batteries |
|---|---|
| Display | Backlit LCD |
| Leakage current (AC 1000 V) | > 10 mA |
Open the battery compartment, insert three AA batteries with correct polarity, and close the compartment.
Check the battery voltage; if the batteries are low, replace them to restore normal display brightness.