LM2596 DC-DC Voltage Regulator Buck Converter Adjustable Step Down Power Supply Module With LED Display.

• DC-DC Buck converter module
• Thickened circuit boards
• Advanced solid-state capacitor
• Short circuit and over-temperature protection
• 100% tested, sealed in anti-static packaging

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 needs 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 shut down the digital tube voltmeter.

2. Long press (>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 Includes:

1 x DC-DC Step Down Voltage Converter with LED Display