The CH899 (often branded as "City Lux") is a standard radio-controlled wall clock. Its primary feature is that it synchronizes with the atomic clock signal (MSF in the UK/DSF in Germany) to maintain perfect time automatically. It automatically adjusts for Daylight Saving Time (DST).

To set up or troubleshoot your , follow this guide based on official manufacturer procedures. 1. Automatic Setup

If the CH899 still won’t sync after 2 nights, the radio receiver may be defective. Contact your seller for a replacement—this is common with budget Chouchin models.

Follow these steps exactly to ensure the clock locks onto the signal.

: Stop pressing the button for about 6–10 seconds to save your setting and return to normal timekeeping. TLC Electrical Supplies Troubleshooting Force Signal Search : If the time is incorrect, press and hold the