Specifications Joule Rating: 1700J Rated Voltage: 125V Power Capacity: 1250W (125V/10A) Input: AC 100-240V 50/60HZ USB Output: 5V /2.4A (per port) Fireproof temperature: 1382 Safety protection: Overvoltage protection Load protection: Main switch (10A) Multi-protected safety system • 15000A max and 1700J surge suppression rate, the unit transfers optimum power and helps keep devices plugged in safely, especially during storms and power outages. • Built-in power switch, whose service life is up to 6000 times, turns on/off as you need. • Its beautiful PC and ABS plastic material chassis makes it fireproof up to 1382. 4 high power super charging ports • Ultra-powerful 4-port USB charger up to 20W, capable of charging 4 tablets or smartphones. • Integrated with fast charging technology that allows each port to detect and deliver ideal input current every time up to 2.4A. Unique and convenient design • Integrated copper foil design, high conductance and large heat dissipation, pull and plug 6000 times not loose. • There are natural non-slip rubber pads at the bottom, so it is stable and not easy to move for desktop use. • Soft white LED indicator won't disturb your sleep.