1. perfect for household use in DB Boards.2. Repeat programs with 17 on/off settings, and setting on/off manually.3.The Timer can open or close kinds of electrical apparatus and automatically, according to the preset time.4.The items can be streetlight, neon light (sign), , electrical appliances, broadcast equipments etc.,5.The digital timer switch is within rechargeable battery, in 1.2V/40Ma, high-accuracy CMOS chip, strongly anti-jamming, easy to use.Specifications:Temp.range: -20 Celsius+50 Celsius Supply:220V AC consumption 4.5 VA (MAX)Display: LCDSwitching contact: 1 changeover switchPrograms:17 on/off each day or weekHysteresis 1 sec/day (25 Celsius)Mini interval: 1minBlack-out: 60 daysTimer range: 1min~168hRecharge battery: 1.2V 40MaAverage error: 1s/24h, 25 CelsiusColour:whiteMaterial:ABS+electronic componentsSize:12.0cm x 8.0cm x 6.0cmPackage Contents:4 x Timer4 x User ManualOnly the above package content, other products are not included.Note: Light reflection 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.