Features:1. High-power fast charger, 30-port USB hub charging station built-in power supply MR.2. The sturdy aluminum metal frame makes the product durable for a long time.3. Built-in intelligent multiple security protection for overcurrent, overvoltage, short circuit and overheating.4. It can be charged to 30 mobile phones or other electronic products at the same time.5. Super fast charging, very suitable for your mobile phone, tablet, etc.6. Fully compliant with most electronic devices.7. Suitable for hotels, bars, factories, schools, hospitals and homes.Specification:Insulation strength: AC 3000vaC/5mA, 1 minuteInsulation resistance: input-output 10M, input - case 100M, DC 500VEnvironmental conditions: working temperature: 0 C ~ 40 C, relative humidity: 20% ~ 95%, storage temperature: -20 ~ 70 CUSB port: 30Single port: 2AMaterial: MetalColor: BlackPackage Size: about 32*18*12cm/12.6*7.09*4.72inPackage List:1 * USB Hub1 * Power Cable1 * Data Line.