1The high speed of the fan can change according to the heat sink temperature. 2Protection of over-heating, overpower, over voltage, reserve polarity, and power supply voltage abnormity. 3Equipped with industrial large tooth heat sink, dust-resistant, which can run for a long time. 4Durable construction for long-lasting performance. 5Professional test module for detecting discharge battery capacity. Description: This Electronic Load has the high speed fan, which can automatically change the speed. High 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: The 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.Durable construction for long-lasting performance.Professional test module for detecting discharge battery capacity.Specification: 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 x 2.5mm Size: Approx. 11 x 9.5 x 7cm / 4.3 x 3.7 x 2.7inch Weight: 385g Package List: 1 x Electronic LoadOperation Instructions: Connect with DC 12V 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.