Do you need a (Cycle timer) or just a daily ON/OFF? Is your unit the 110V or 220V version?
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
Digital timers use a crystal oscillator. The TM630S has an accuracy of ±1 second per day. If it is losing minutes per week, the internal crystal is failing, or the unit is exposed to extreme temperatures outside of -10°C to 55°C. Do you need a (Cycle timer) or just a daily ON/OFF
Search for the exact model number printed on your device (including supply voltage variant). The full PDF manual contains wiring diagrams, detailed menu trees, electrical specifications, and safety certifications. The manual warned that the timer wouldn't execute