This electronic load uses IR power tube and double high-speed ball bearing fan, with big fin heat sink, which is not afraid of dust and can guarantee the stability for a long time use, power redundancy is no less than 50% (25& 8451;). Classical digital tube display, intuitive and durable, compared to LCD, it is more resistant to high temperature. It can display voltage and current when discharging constant current, visually reflecting the discharge conditions. Voltage and current wiring connectors are separated, with appropriate connection, it can eliminate the influence of wire resistance to voltage. 100% power burn-in in factory, suitable for assembly of power adapter fully-automatic burn-in cabinet. Specifications: Power Supply Voltage: DC12V(±5%) (equipment supply voltage) Maximum Load Voltage: 100V Constant Current Discharge Adjusting Range: 0-20A Work Mode: Constant current mode (CC) Maximum Discharge Current Error: 0.7%-0.01A Maximum Discharge Power:250W Size: 13*9*11.5cm/5.1*3.5*4.5 inch Weight: 879g(approx.) Instruction: 1. Connect to 12V power supply then power on to electronic load mode. Make sure it is at stop condition (knob clockwise is minimum) then connect the tested power supply to the input power port, pay attention to the polarity. 2. Rotate knob to set constant current. Colour: Black Material: metal + PC Package Contents: 1*Discharge Board Burn-in Module Note: Since it works openly, there is no voltage and power limitation, but normal work should be below 100V, 250W. Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.