This manual covers the installation steps, basic functions, and configuration options for the Sampo HT‑B1004L telephone. It explains how to connect the device, install batteries, and set up call‑related features such as call‑forward, flash, and long‑distance lock.
The guide also includes safety precautions, emergency handling, and detailed troubleshooting procedures. Technical specifications such as dimensions, DTMF frequencies, and distortion limits are listed at the end of the document, along with service contact information. This manual is written in Chinese.
| Dimensions | 200 x 163 x 56 mm |
|---|---|
| DTMF Frequencies | 697, 770, 7852, 941 Hz |
| Maximum Distortion (voice) | ≤ 5 % |
| Maximum Distortion (send‑receive) | ≤ 7 % |
| Brightness Levels | 5 selectable levels |
Do not disassemble the telephone; follow the troubleshooting steps and contact your dealer for assistance.
Press the “亮度” button; the display will cycle through five brightness levels that you can select.