Module Properties: non-isolated constant current and voltage moduleRectification: non-synchronous rectificationInput voltage: 5V-30VOutput voltage: 0.8V-29VOutput current: adjustable maximum 5AConversion efficiency: 95% (the highest)Switching frequency: 180KHzOutput ripple: 50mV (max) 20M bandwidthLoad Regulation: ＼ 0.5%Voltage Regulation: ＼ 2.5%Operating Temperature: -40≧to +85≧Size: 51 * 26.3 * 14 (L * W * H) (mm)Note: Due to the difference between different monitors、 the picture may not reflect the actual color of the item. Thank you! Voltmeter AmmeterMeasurement accuracy: 0.1%Refresh rate: about 200ms / timesDisplay: 0.28"digital tubeCurrent Range 0A-5AVoltage range 5V-30VDisplay Color RedStorage Temperature:-10≧ to +65≧Input impedance: 50 milliohms