TM618 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 streetlight, neon light (sign), lamp, water heater, air conditioner, electric cooker, booster, sprayer, bottler, preheater, agriculture facilities and broadcasting equipment etc. The digital timer switch is within battery, to save the programs for power failure.it has the features of low consumption, high-accuracy CMOS chip, strongly anti-jamming, set for household use in pannel mounted 3500 Watt / 16 Amps, 1NO 24 hours / 7 days a week programmable Built-in Battery for saving the memory when power failure Auto time error correction +/- 30 sec, weekly Repeat programs with 16 on/off settings, and setting on/off manually color: White Material: ABS+electronic components Technical Data: Model:TM618sH Temp.range: -20C+50C Power Supply: 110V Power consumption :4.5 VA (MAX) Display: LCD Output:Power direct output Programs:8 on/off each day or week Hysteresis 2 sec/day (25C) Mini interval: 1 second Capacity: 16A 250V AC Black-out: 60 days Timer range: 1min~168hr Recharge battery: 1.2V Average error: 1s/24h, 25C Package Contents: 1 x Timer switch 1 x User Manual