Usage Tips: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, billboard, 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 failiure. it has the features of low consumption, high-accuracy CMOS chip, strongly anti-jamming, simple and easy to set perfect 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: -20°C+50°C 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 (25°C) Mini interval: 1 second Capacity: 16A 250V AC Black-out: 60 days Timer range: 1min~168hr Recharge battery: 1.2V Average error: 1s/24h, 25°C Package Contents: 1 x Timer switch 1 x User Manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.