This document is an operation guide for ID-25B 1 MA0405-EA SET °C °F MSF DCF WAVE RESET, which describes the functions and operation steps of the clock.
The Casio ID-25B is a digital clock featuring automatic time calibration via DCF (Germany) or MSF (UK) signals. The device includes built-in sensors for temperature and humidity measurement, allowing users to monitor environmental conditions alongside the time display.
Users can manually adjust the date and time if signal reception fails due to location or interference. The manual details procedures for switching between Celsius/Fahrenheit units, selecting transmitters, and replacing batteries while ensuring proper reset after maintenance.
This clock can receive signals from the Mainflingen, Germany transmitter (DCF) or the Rugby, England transmitter (MSF).
The antenna icon disappears from the display if no signal receive operation is successful during a continuous 24-hour period.