Short-circuit protection All 10 outputs in this unit have separate short-circuit protection, i.e. Short circuit in one channel won't affect other channels' function. Under the circumstances of all LED lights on, LED light of the short-circuited channel will off, while lights in the other normal channels are still on. This helps locating the faults when there were short circuits among many effectors. Switch For LED Lights Turn the switch towards those LED lights, normally all lights would go on after the power is connected. If you don't want all LED lights, please turn the switch back. Specifications: Material: Fireproof Plastics ( ABS+PC ) AC Rated Input: 110-240V , 50/60Hz AC Outelet Rated Output: AC 100-240V , 50/60Hz, 600W Power Up State: US 2-Prong Plug AC Power Cord: 5Ft Detachable Cable item weight: 7 oz. Item Size: 7*2.7*0.9 in DC Output : - 7 way 9v 100ma. - 1 way 9v 500ma. - 1 way 12v 100ma. - 1 way18v 100ma. Connection: Included cables use industry standard 5.5mm x 2.1mm positive barrel, negative center polarity plugs. Attention: The output ports of this unit is negative central polarity.Incorrect polarity would damage this unit and your devices, please make sure correct positive and negative polarity before wiring. Some pedals may be damaged if poweredusing a voltage that exceeds the level required by the manufacturer, e.g.powering a 9V pedal with 15V or 18V. We highly recommend staying at or belowmanufacturer's state voltage requirement. What you Get: 1 x Hiree Power Supply 1 x 1.5m AC Power Cord 10 x 5.5mm x 2.1mm DC Power Cable 2 x Polarity Reversal Cable