SPECIFICATIONSBrand Name: AOKINModel Number: 821007999944Origin: Mainland ChinaHign-concerned Chemical: NoneCondition: NewType: ModuleChoice: yesModule highlights:1. Comfortable price, intelligent and user-friendly design, with ultra-high cost-effectiveness!2. On board voltmeter, the voltmeter can self calibrate and there will never be an issue of inaccurate voltmeter!Module performance and characteristics:Equipped with a voltmeter display and capable of self calibration. We have adopted more advanced voltage microprocessors, with a voltmeter error of ± 0.05V and a range of 0-40V. (To ensure the accuracy of the voltmeter, please ensure that the input voltage is above 4.5V.)Gently touch the button to switch between measuring input or output voltage, and there is an indicator light indicating which voltage is being measured, and the setting is saved, even if it is turned off and then on again.The voltmeter can be turned off, and it can be easily achieved by lightly touching the left button when not needed.Equipped with wiring terminals, it is convenient to use without soldering iron, and retains the soldering wire connection points.● Input voltage of 4.0-40V. (The input voltage must be at least 1.5v higher than the output voltage)Adjustable output voltage range: 1.25V~37V, continuously adjustable. (The input voltage must be 1.5V higher than the output voltage)The output current is 3A, and it is recommended to use within 2.0A. High current requires enhanced heat dissipation.The output power is 20W. If it exceeds 15W, please strengthen the heat dissipation.● High conversion efficiency, with an average of 88% (efficiency is related to input and output voltage, current, and voltage difference)Equipped with reverse connection protection, reverse connection does not burnEquipped with overheat protection and short circuit protection functionsSize 6.1 * 3.4 * 12cm (length * width * height)Weight: 22g