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KKChan 23/03/2018
I first tested this with 12V and set the current to 0.1A. The actual current measured was 0.12A but the display was 12.5V and 0.15A. So the measurement was way off. Then I used 50V and set the current to 2A. It lasted just 2 seconds and the current inputs developed a short-circuit. The fan did not started at all. The display still worked but the constant current setting no longer worked. I measured the resistance among the power MOSFET device (IRFP250) pins and they were shorted together. I changed the MOSFET to a good one (IRFP460) and it works again. The voltage and current measurements are also much more accurate now. My conclusion is that this is of very poor quality and I do not recommend it at all.
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  • Banggood Dear customer, Thank you for your order and before even attempting to explain the reasons leading to this unintended mistake, we would like to sincerely apologize to you. In our attempt to serve you better and retain you as one of our valuable customers, please contact our customer service representatives by this link: http://www.banggood.com/Contact-Us_hi111 We would highly appreciate if you could send us all the information listed here below: 1.Some photos of the shipping label, which can be found on the external side of the package; 2.The SKU number of the products you received. You can find this information on the label placed on the item itself; 3.Some photos or video to show the entity of the problem; 4.The order number and the product ID. Looking for your kindly reply. Have a nice day. Best regards, Banggood team

    09/08/2022
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