DC-DC Converter Adjustable Power Supply Step Down Module

LM2596S DC to DC Buck Converter Adjustable Power Supply Step Down Module With Led Voltmeter Features: With voltage display function, the displayed accuracy is ± 0.05V, range is 0 - 40V.( Note: in order to voltage display more accurate, please ensure that the input voltage is higher than 4V). Button to switch measurement of the input or output voltage, and LED indicates the current measurement of the input or output voltage. The nixie tube can be turned off by another button. Mentioned in these states are able to be memorized, is not lost even if the power is disconnected. Continuously adjustable output voltage range of 1.25V -37V, 4-40V input voltage range.(The input voltage is at least high than the output voltage of 1.5V). High efficiency,150 kHz fixed frequency internal oscillator. Guaranteed 3A output load current. Thermal shutdown and current limit protection.