4 Pieces Adjustable Lm2596S Dc Dc Buck Converter Reduced Voltage Regulator Power Module 36V 24V 12V To 5V 2A Voltage Stabilizer

Features: How To Use: 1. Press The Button In A Short Time (1 Second) So That ''In'' Led Lighted, The Voltmeter Shows The Value Of Input Voltage. 2. Press The Button In A Short Time (1 Second) Again So That ''Out'' Led Lighted, The Voltmeter Shows The Value Of Output Voltage. 3. Rotate The Top Screw Of Potentiometer Clockwise To Boost The Value Of The Output Voltage, Anti-Clockwise To Reduce It. 4. Long Press The Button Between 1 And 4 Seconds To Turn Off The Voltmeter. How To Adjust Accuracy Of Input/Output Voltage: (For The Person Who Need A Highly Accurate Value Of Number)1. Long Press The Button For More Than 4 Seconds, Then Release, Voltmeter And ''In'' Led Flash In Synchronization Entering Into The Input Voltage Calibration Mode. 2. Press The Button In A Short Time (1 Second) To Adjust The Value (Range From -0.5 - 0.5V)3. Long Press The Button For More Than 2 Seconds And Then Release To Enter The Output Voltage Calibration Mode. 4. After Calibration, Long Press The Button For More Than 2 Seconds All Parameters Will Be Saved Automatically And Back To The Voltage Display. Specification: Function: Built In Over-Temperature Protection Functionbuilt In Current Limit Functionbuilt In Output Short-Circuit Protection Functionsize: Approx. 6.6 X 3.9 X 1.8 Cm/ 2.6 X 1.5 X 0.7 Inchespackage Include: 4 X Lm2596S Buck Converter Dc To Dcnote: Please Keep Away From Little Kids.