Features 【MULTI-FUNCTION】: A professional constant voltage and constant current programmable control power supply module, which integrates analog integration and digital control functions. This module has a power-down storage function and can store 10 sets of preset values. And it also has the function of quickly withdrawing two sets of stored value. 【EFFICIENT】: High precision and sensitivity, the power module can more easily and quickly extract the required voltage or current. The LCD screen on the module can check the preset voltage, input voltage, output voltage, preset current, output current, output power, etc. 【USE】: IN+: input positive, IN-: input negative; OUT+: output positive, OUT-: output negative, press the ON/OFF key to turn on or off the output on any interface, the module is easy to operate, with a lock button, which greatly improves safety sex. 【MAINTENANCE】: The input voltage range is DC 6-40V, and 40v is the limit voltage; the input must be DC power supply, this module has reverse connection protection and output short circuit protection, but please connect in strict accordance with the wiring instructions. If you connect power to the output, you will burn the module. 【INTUITIVE】: In the output status reminder area, you can see whether the output is on or not, the constant voltage and constant current status, whether the output is normal, whether the key is locked, and the data group currently in use. In the setting data interface, you can adjust the overvoltage value, overcurrent value, overpower value, data setting and LCD brightness. Specification: Input voltage:6.00-40.00V/6.00-55.00V     Output voltage：0V-32.00V/0V-50.00V Output current：0-5.000A/0-5.000A Output power：0-160.0W/0-250.0W Voltage resolution：0.01V/0.01V Current resolution：0.001A/0.001A Size80*44*45mm/3.1*1.7*1.8in Weight Approx.138g/4.9oz Note: 1.Before buying this product, please download the upper computer software and test, if it fits your computer , you can buy 2. the upper computer only support For Win7 and above Package list: 1 x Step-Down Module 1 x blueteeth board 1 x USB board 1 x communication cable       Package List