This document introduces a new smartphone from a certain brand. The smartphone features the latest processor and has a powerful performance. It also has a high-resolution screen and a high-resolution camera, which can take clear photos and videos. In addition, the smartphone supports multiple network connection methods, which can meet the needs of users.
This manual explains how to install, configure, and operate the Wonder WD-302 telephone. It includes safety notes, wiring instructions, and details on the device’s functions such as tone/pulse selection, mute, flash, and redial.
Key features covered are the wall‑mounting procedure, the DTMF tone specifications, and the various button functions (TONE/PULSE, MUTE, REDIAL, FLASH). The warranty section outlines service terms and contact information for support. This manual is written in Chinese.
| DTMF high‑frequency tones | 1209/1336/1477 Hz |
|---|---|
| DTMF low‑frequency tones | 697/770/852/941 Hz |
| HF signal level at 0 km | -6 dBm |
| Voice distortion | ≤7 % |
| Tone distortion | ≤5 % |
Fix the supplied wall‑mount bracket to the wall, then attach the phone to the bracket as shown in the manual.
Use the TONE/PULSE selector switch to choose the appropriate mode for your telephone system.