Usage Tips:Features: 1.Easy to read LCD display, LED indicators. 2.Mimimum 1 second interval. 3.8 ON/OFF programs per day, 15 combinations to a week. 4.24 hours / 7 a week programmable. Countdown function. Max 24 hours countdown to OFF. Built-in rechargeable battery for saving the memory when power failure. Repeat programs with 8 on/off settings, and setting on/off manually. perfect for household use in pannel mounted. color: White Material: ABSandelectronic components Parameter: 1.Model number : CN101S 2.Power supply:5V,12V,24V,110V,220V 50/60Hz 3.Max load:16A 4.Min interval:1 second 5.Timing range:1 second to 168 hours 6.Setting groups:8 ON/OFF per day 7.Programs:15 Groups 8.Black-out:60 9.Average error:Less than 2 sec/day 10.Battery type:1.2V,inside,rechargeable 11.Installation:Pannel/wall mounted Package Contents: 1 x Timer switch 4 x terminal 1 x User 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 picture a little different from the real thing. The measurement allowed error is 1-3cm.