This manual introduces the Sampo HT-W406L caller ID display, covering basic operation, DTMF tone functions, and wiring guidelines. It is organized as a typical user guide with a clear table of contents and step‑by‑step instructions.
At the end of the document, contact phone numbers for technical support are provided, allowing users to obtain assistance quickly if issues arise.
Support phone numbers are listed at the end of the manual, e.g., (02) 8990‑4440 and (06) 202‑6536.