1. perfect for household use in DB Boards. 2. Repeat programs with 17 on/off , and setting on/off manually. 3.The Timer can open or kinds of electrical apparatus and power automatically, according to the preset time. 4.The items can be streetlight, 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 Power Supply:220V AC Power consumption 4.5 VA (MAX) Display: LCD Switching contact: 1 changeover switch Programs:17 on/off each day or week Hysteresis 1 sec/day (25 Celsius) Mini interval: 1min Black-out: 60 Timer range: 1min~168h Recharge battery: 1.2V 40Ma Average error: 1s/24h, 25 Celsius Colour:white Material:ABS+electronic components Size:12.0cm x 8.0cm x 6.0cm Package Contents: 1 * Timer 1 * Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.