TM630A 30Amp Mini Digital Programmable Timer can be operated in 4 separate power supplies, ranges from 240Vac to 12Vdc. This Digital timer is accurate to the minute, designed with either 8 or 16 ON/OFF(event) per day. The digital timer switch is within rechargeable battery, in 1.2V/40Ma, to save the programs for power failiure. it has the features of low consumption, high-accuracy CMOS chip, strongly anti-jamming, simple and easy to set, confirms to IEC 60367 and CE certificated. Application The 7 days 24hours Mini Digital Programmable Timer can automatically switch on and switch off various kinds of electric equipment at a preset time. It is widely used in 7 days programmable control of streetligh, neon light, water pump, fan control, agriculture facilities , broadcasting equipment, heating and refrigerating systems, boiler, overns, dryers, defrosting equipments,swimming pools, hatcheries, light timer, also Ozone and gate operator etc. Feature â?¢ 7 Days / 24 Hours programmaing timer â?¢ 8 ON/OFF programs per day, 15 combinations to a week â?¢ One channel, voltage-free â?¢ Accurate to the minute control â?¢ Low power consumption for 1.2V chips â?¢ Easy to read LCD display, LED indicators â?¢ Reset function and manual override â?¢ Build-in Battery, can retain programmed fuctions about 3 months for power failure Also, it provides 15-combinations of Daily-Programs which can leads great convenience to users upon choosing desired DAYS of WEEK. Description as below: Model description TM630A-1 120Vac main supply TM630A-2 240Vac main supply TM630A-3 24Vac/Vdc(option) TM630A-4 12Vdc mail supply TM630A 30A Mini Digital Programmable Timer Wiring