Users complain "the timer isn't working!" because they have left the unit in manual OFF mode instead of AUTO mode.

This manual is a generic guide. For exact wiring diagrams or specific voltage versions, consult the label on your TM-630S or contact Sinotimer support.

If the screen shows a small "a" symbol, the keyboard is locked. Press the C/R button 4 times quickly to unlock it.

Understanding the limits and capacity of the TM-630S ensures safe installation and maximum longevity of the device. Specification Detail

Before installation, verify that your device matches your electrical system requirements.

: Alternates the device operational modes between ON, AUTO, and OFF. It also functions as a Reset/Cancel/Recall button ( C/R ) to wipe or restore specific programs. D+ (Week) : Selects single days or preset multi-day blocks. H+ (Hour) : Increments the hour configurations ( M+ (Minute) : Increments the minute configurations (

Connect your main incoming power supply here. Connect the Live/Phase wire to Terminal 1 and the Neutral wire to Terminal 2.

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This guide is for informational purposes. Always consult the specific instruction sheet included with your Sinotimer TM-630S Go to product viewer dialog for this item. unit for final technical guidance. If you'd like, I can: Find the for the Sinotimer TM-630S Go to product viewer dialog for this item.

Hold the CLOCK button and press the D+ button until the correct day of the week appears (MO, TU, WE, etc.). Set Hour: Hold CLOCK and press H+ to adjust the hour. Set Minutes: Hold CLOCK and press M+ to adjust the minutes. 3. Programming the Timer (ON/OFF Cycles)

: Sets precise seconds (crucial for short pulses like institutional bells).

The timer screen displays a lock symbol (🔒) and buttons do not respond.