Usage Tips:CN101S 1 Second Interval Timer Clock 7 Days Weekly Programmable Digital Timer 220v ac Switch Power Timer Car Timer Timer days CN101S 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. 3500 Watt / 16 Amps, 1NO. 24 hours / 7 days a week programmable, 1.2V Built-in Battery for saving the memory when power failure.Auto time error correction +/- 30 sec, weekly. Power in 220V and power output 220V. size:7.0 cm x 7.0 cm x 4.0 cm Material:ABS+electronic components colour:white 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.