Electrical characteristics: Input voltage: 100-240v ac (90-264v ac) Input current: 0.5a max Frequency: 50/60hz (47-63hz) Output voltage: 3.0-30v Output current: 0.1-2.0a No-load power consumption: 0.1w max Efficiency: 78% minute Ripple and noises: 50-200mv Line regulation: ±1% Load regulation: ±5% Output protections: Short circuit protection Over voltage protection Over current protection Environmental characteristics: Hi-pot test: 3750v ac 60s 5ma max Insulation resistance: 100m minute Leakage current: 0.25ma max Operating temperature: 0 to 40 Storage humidity: 5-95% rh Burn-in test: rate load, 40 ±5??, 4 hours Emc standard: en55022 class b/fcc part 15 class b en55024/a1: 2001/en61000