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. parameter You can use the tier to SWITCH ON/OFF any elctrical equipments at a preset timer Perfect for household use in DB Boards 6500 Watt / 30 Amps 24 hours / 7 a week programmable Built-in battery for backup the memory (save the programs you set)when power failure Auto time error correction +/- 30 sec, weekly Repeat programs with 17 on/off settings, and setting on/off manually Colour:Black Material:ABS+electronic components Size:12.0 cm x 8.0 cm x 6.0 cm Package Contents: 1 * Timer switch 1 * 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.