This manual describes the features of the Sampo HT‑B904L wired telephone with caller ID display, including power specifications, frequency groups, and battery requirements. It also explains how to install the unit, connect it to the telephone network, and configure optional functions such as temporary cut, lock, and music‑hold.
Detailed sections cover normal operation, service functions, fault diagnosis, and after‑sales support. Users are guided through setting the date/time, adjusting volume, managing stored numbers, and using the caller‑ID service provided by the local telecom operator. This manual is written in Chinese.
| Power consumption | 90 mW |
|---|---|
| Country of manufacture | China |
| DTMF frequency tolerance | ±1.5 % |
| Frequency groups | High: 1209/1336/1477/1633 Hz; Low: 697/770/852/941 Hz |
Press the “暂切/设置” key, enter the desired time using the numeric keypad, and press the key again to save.
The local telecom operator must provide caller‑ID service; otherwise the phone works as a normal handset.