Even with the in hand, things go wrong. Here are the top 5 issues and their fixes.
Repeat the same steps (Days, Hours, Minutes, Seconds) to set the OFF time. to save and exit. 4. Operating Modes button to cycle through: Permanently ON. Permanently OFF. Executes your saved programs. Wiring Overview Pins 1 & 2: Power supply input. Pins 3 & 4: Load output (switch side). For further details, you can consult the official Sinotimer Support or download a digital copy via for your power source (12V vs 220V)? sinotimer-tm-630a-operating-manual.pdf - pic-control sinotimer tm-630s manual
Press when in AUTO mode → the load turns OFF for exactly 1 hour (or ON? check your unit). Common use: Temporary holiday override. Press again to cancel early. Some models reverse the behavior; test with a lamp. Even with the in hand, things go wrong