1. Intelligent start and stop fan, optimized fan drive circuit, more stable wind power and working voltage. 2. High-current USB, dual interfaces are more widely applicable, and can be used in parallel if the power is not enough. 3. Upgrade the high-power tube with higher fan speed and better heat dissipation, resulting in higher load power. 4. Intelligent over-temperature adjustment to avoid excessive temperature damage to the module or other issues when overloaded. 5. Wide range of applications: The main purpose is power aging, battery discharge, factory testing, etc. It is suitable for production aging uses. Voltage: DC 3.7-20V Working current: less than equal 3A Maximum power: 25W Interface: USB/Type-C Heat dissipation method: all-aluminum fan heat fin + intelligent temperature-controlled fan Module interface: USB/Type-C: Input 3.7-20V power supply, and the two interfaces are parallel inputs. ON FAN short circuit: Force the fan to rotate. OFF FAN short circuit: forced to stop the fan rotation. Blue potentiometer: clockwise increases current, counterclockwise decreases current Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Colour:Photo Color Material:FPC Package Contents: 1x Electronic load module Only the above package content, other products are not included. Note: Light reflection 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.