Dual USB Port Rapid Home Adapter 3.1A Key Specifications/Special Features: 1. High efficiency, high cost-effective, portability, stable product quality 2. Protection: input, output over voltage protection, short circuit protection, over current protection cleverly perfect protection 3. Working temperature: 0 to 40°C, 10-90%RH Storage temperature: -20 to 85°C, 10-90%, altitude <3000m 4. Reliability: dielectric strength, 3000V AC, 60 seconds 10mA Leakage current: 0.25mA max 5. Fine workmanship, good material, very easy to use Suitable for: tablet PC, phone, power bank, Bluetooth speakers and more universal USB interfaces Essential parameter Rated input voltage: 100-240V AC, 50/60Hz Rated output power: 30W Input specifications: plug-in (US/EU Plug) Output specification: USB Interface Technical parameter Input voltage range: 100-240V AC Input voltage frequency: 50/60Hz Output voltage: 5V DC ±0.25V Output voltage regulation rate: ±0.5-1% Output rated current: 3.1A Current output range: 0-2.4A Efficiency: 85% Output ripple resistance: =1% Output over-current protection: power automatically shut off, when load exceeds 130% Maximum output power: 30W Input over voltage protection: Power automatically shut off, when output voltage exceeds 120% "