This manual explains how to install and prepare the CT-28 wireless telephone, including mounting the main unit, connecting the handset, and securing the device. It also covers battery charging procedures, power‑up sequences, and how to adjust settings such as call keys and display options.
Additional sections describe normal operation, handling low‑power warnings, and step‑by‑step troubleshooting for common issues like insufficient power or connection problems. Safety notices and maintenance tips are included to ensure reliable long‑term use. This manual is written in Japanese.
The handset emits a warning tone and you should connect the unit to a power source.