Check for the "a" symbol. Press C/R 4 times to unlock.
The most critical part was the "Auto/Manual" mode. The manual warned that the timer wouldn't execute the program unless the display showed 'AUTO'. Elias cycled the button—Manual ON, Manual OFF, and finally, the steady 'AUTO OFF'. He stepped back, the Sinotimer tucked neatly into the control box, a silent sentinel ready for the night. sinotimer tm630s manual
From the safety and FAQ sections:
The TM630S is designed for easy DIN Rail mounting or wall installation. 🕒 Initial Setup: Setting the Clock Check for the "a" symbol
If you are looking at the diagram, you will see a 16-character LCD screen and 6 primary buttons below it. However, there is a "hidden" 8th button inside the battery compartment. The manual warned that the timer wouldn't execute
Safety first: Always turn off the power supply before installation.