Set of 2 Adjustable DC Step Down Power Supply Converter, 4-40V Input to 1.25-37V Output Voltage Regulator with LED Voltmeter for DIY Arduino

Product description Input voltage: 4–40 V Output voltage: 2 A continuous Output current: maximum 15 W Output power: 150 kHz Ripple frequency: 100 mV Grain peak: ±5% Operating instructions: 1. With power indicator. 2. With voltmeter display, using an advanced microprocessor, voltmeter error +0.05 V, range 0–40 V. To ensure the accuracy of the voltmeter, please ensure the input voltage is above 4 V. 3. Press the button on the right to switch between input and output voltage. 4. The voltmeter can be turned off. When not needed, simply touch the button on the left. 5. Thanks to the terminal blocks, it can be easily used without a soldering iron, and the welding wire connection point is retained. 6. The output current can be up to 3 A, and the normal stable operating current is 2 A. 7. The voltage regulator has an internal oscillation frequency of 150 kHz and is a second-generation switching voltage regulator with low power consumption and high efficiency. 8. It features overheating and short-circuit protection. 1. For power above 15 W, a heat sink should be used to improve heat dissipation. 2. If the output voltage cannot be adjusted, please turn the potentiometer counterclockwise more than 10 turns before use. Package includes: 2 x DC-DC step-down converters