Information Note DPS5005 have 3 types here for communication there is a communication interface on the back Pressing the up arrow button at first and power up secondly then will access the communications menu The old version do not have communication function So it can not use with USB communication board and the bluetooth communication Board This is file for upper computer installation and software you can download at this link https www mediafire com folder 3iogirsx1s0vp DPS communication upper computer1 Before buying this product please download the upper computer software and test if it fits your computer then you can buy 2 the upper computer only support For Win7 and aboveThe constant voltage and constant current programmable control power supply module put the collection of analog integration and digital control functions in one Its adjustable output voltage range is 0 50 00V step by 0 01V Its adjustable output current range is 0 5 000A step by 0 001A This module has power down stored function and can store 10 groups preset value And it also has the function of extracting quickly two groups stored value Compared with the traditional analog power supply it is more convenient to quickly extract the voltage or current required LCD display on the module has the function digital voltmeter and ammeter You can view the preset voltage input voltage output voltage the preset current output current output power etc on the output state remind area yo