Valefod 3 Pack Lm2596 Dc To Dc Voltage Regulator 4 40V To 1.5 35V Buck Converter With Led Display

Features: - Dc-Dc Step-Down Module - Thickened Circuit Boards - Advanced Solid-State Capacitor - Short Circuit And Over-Temperature Protection - 100% Tested, Sealed In Anti-Static Packaging Kindly Note: 1. Input Voltage Must Be 1.5 V Higher Than The Output Voltage, No Boost 2. Do Not Reverse The Input And Output Interface 3. Keep Output Under 2A (Or 15W), And Use A Heat Sink When For A Long Time Working 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. Specifications: - Model: Lm2596 / Digital Tube Voltmeter - Input Voltage: Dc 4V - 40V - Output Voltage: Dc 1.5V - 35V (Adjustable) - Output Current: 3A (Max.) - Conversion Efficiency: 92% (Max.) - Switching Frequency : 150Khz - Operating Temperature: -45? To +85? - Size(L X W X H): 57*36*13Mm - Weight: 21G Package List: 3X Dc-Dc Buck Converter Module With Led Display