5Pcs Lm2596S Dc Dc Lm2596 With Led Display Voltmeter Buck Converter Step Down Regulator 4.0 40V To 1.25 37V Dc 36V To 24V To 12V

Specification: Module Model: Lm2596 Buck Converter + Voltmeter Cutting Size: 66.04Mm X 35.05Mm Input Voltage: Dc 4.2-40V Output Voltage: 1.25V~37V (Continuously Adjustable, The Input Voltage Must Be 1V Higher Than The Output Voltage) Output Current: 2A (Normal And Stable), 3A Max Ripple Frequency: About 150Khz Ripple Peak: About 100Mv Voltage Meter Error: 0.1V Keep Output Under 2A (Or 15W), And Use A Heat Sink When For A Long Time Working Wiring Connection: In+: Connect In+ To Your Input Positive In-: Connect In- To Your Input Negative Out+: Connect Out+ To Your Output Positive Out-: Connect Out- To Your Output Negative Applications: Experiment Teaching Temporarily Set Up Power Supply In The Outdoor Car(Audio, Electric Fan)Power Supply How To Calibrate The Digital Tube Voltmeter: Optional Steps For The Person Who Need A Highly Accurate Voltage Value 1.Short Press The Left ''On/Off'' Button To Start Up The Digital Tube Voltmeter. Long Press(>1S, 4 Seconds) The Left Button To Enter Self-Calibration Of Voltage Measurement(Calibration Range: -0.5-0.5V, Factory Setting Is 0.0). ''In'' Indicator Lights = Input Voltage Measurement Calibration Starts. Then, Long Press(>2 Seconds) The Right ''Mode'' Button, ''Out'' Indicator Lights = Output Voltage Measurement Calibration Starts. Tap The Left / Right Button To Reduce / Rise By One Unit (Since The Voltage Value Of One Unit Is Less Than 0.1V, You Need To 1-5 Times Tap The Button Continuously, So That The Voltmeter Can Change By 0.1V) 3.After Calibration, Long Press(>2 Seconds) The Right ''Mode'' Button To Preserve The Adjusted Value(No Loss With Outage) And Back To Normal Voltage Display. Package Includes: 5 X Dc-Dc Volt Buck Converter