SINOTIMER TM630S-4 12V 30A Timer Switch 1 Second Interval Weekly Programmable Time Relay 1. TM630S can automatically turn on and off various electrical equipment at preset times. It is widely used in 7-day programmable control of street lamps, neon lights (signs), lamps, water heaters, air conditioners, billboards, rice cookers, boosters, sprayers, bottlers, preheaters, agricultural facilities and broadcasting equipment, etc. 2. The digital timer switch has a built-in battery to save the program when the power is off. It has the characteristics of low power consumption, high precision of CMOS chip, strong anti-interference ability, simple and easy to set up, etc. 3. 5000 Watts30 Amps, 1NO 4. 24 hours7 days per week programmable 5. Internal battery to save memory in case of power failure 6. Automatic time error correction +- 30 seconds per week 7. Repeating program with 28 onoff settings and manual onoff setting Technical data: 1. Temperature range: -20 to 50 degrees Celsius 2. Power supply: 12V DCAC 3. Power consumption: 4.5 VA (max) 4. Display: LCD 5. Switch contacts: 1 changeover switch 6. Program: 28 onoff per day or per week 7. Hysteresis: 2 secondsday (25 degrees Celsius) 8. Minimum interval: 1 second 9. Capacity: 30A 250V AC 10. Power failure: 60 days 11. Timing range: 1 second~168 hours 12. Rechargeable battery: 3V 13. Average error: 1 second24 hours, 25 degrees Celsius