DIY LM317 LED Digital Display Adjustable Regulated Power Supply Board Module

Features: 1.Brand new and high quality 2.Overheat overcurrent short circuit full protection. 3.The use of stable and reliable 4.With LED display 5.Suitable for electronic production DIY enthusiasts 6.Welding convenient and simple installation 7.Regardless of the positive and negative input, compatible with 27V AC or 40V DC or less 8.Circuit board size:58*42mm NOTE: when using a large current, it is recommended to increase the area of heat sink or cooling fan. Package Included: 1 x DIY LM317 LED Digital Display Adjustable Regulated Power Supply Board Module Instructions/schematic are NOT included. We don't provide technical assistance please make sure that you are familiar with the product before purchasing.