1. Simple wiring, 110V input,110V output, no need to ask an Electrical Engineer,you can do it by yourself .2. Excellent load capacity, 6500Watt,30AMP.3. Easy program, everyone can program it after he reads the manual JUST one time.4. Stable performance because of professinal manufacturing in power saver since 2002.parameterYou can use the tier to SWITCH ON/OFF any elctrical equipments at a preset timerPerfect for household use in DB Boards6500 Watt / 30 Amps24 hours / a week programmableBuilt-in battery for backup the memory (save the programs you set)when power failureAuto time error correction +/- 30 sec, weeklyRepeat programs with 17 on/off settings, and setting on/off manuallyColour:BlackMaterial:ABS+electronic componentsSize:12.0 cm x 8.0 cm x 6.0 cmPackage Contents:1 * Timer switch1 * User ManualOnly 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.