Step-down --- Adjustable output voltage range is continuously adjustable from 1.25V to 37V (input voltage must be more than 1V higher than output voltage). Step-down device---dc-dc converter The maximum output current can be as high as 3A, and the commonly used stable working current is 2A. Using 150KHz internal oscillation frequency, it belongs to the second generation switching regulator, with low power consumption and high efficiency. Step-down device---with terminals, it is convenient to use without soldering iron, and the soldering points are reserved. The input voltage is 4.0~40V (the input voltage must be more than 1v higher than the output voltage). Step-down device---Tap the button to switch to measure the input or output voltage, the indicator light shows the voltage being measured, keep the last setting, even if the power is turned off and then turned on again. Step-down device---Long press the switch for more than 1 second and less than 4 seconds to turn off the step-down device. This module can be used in the step-down field where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V car pen power supplies, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc. Quantity: (1 pack) Adjustable step-down module with voltmeter display, other products not included Size: 6.1*3.4*12cm (L*W*H) (for reference only) Color as shown