This electronic load can automatically change the speed with the high speed fan. Fine quality heat sink can serve a long time performance. It supports multiple protections of overheat, overpower, over-voltage, reserve polarity and power supply voltage abnormity. Features: A professional test module for detecting discharge battery capacity. High speed of the fan can change according to the heat sink temperature. Protection of over-heating, overpower, over voltage, reserve polarity, and power supply voltage abnormity. Equipped with industrial large tooth heat sink, dust-resistant, which can run for a long time. Long-lasting construction for a long time performance. Specifications: Item type: Electronic Load Power Supply: DC12V5% Fan Current: 0.72A Constant Discharge Current Range: 0-10A(whole machine) Working Mode: Single Mode Constant Current(CC) Discharge Current Max Error: 0.7%-0.01A Max. Capacity Test Error: 0.5A 2.5%, 2A 1.5%, 5A and above 1.2% Max. Power: 100W Input Interface: 5.5 * 2.5mm Package weight: 458g / 1pounds Package size: 140 * 130 * 120mm / 5.51 * 5.11 * 4.72inches Operation Instructions: Connect with DC12V power supply and enter electronic load mode, ensuring in a stopping state, connect the power supply under test to the test input port. Please pay attention to connect the right polarity! Set constant current through knobs. Note: Since it works openly, there is no voltage and power limitation, but normal work should be below 100V, 100W. Package List: 1 * Electronic Load