KingBra 2 PCS LM2596s Buck Converter DC to DC Voltage Regulator Power Module 12V to 3.3V?12V to 5V?24V to 5V?24V to 12V?36V to 24V Voltage Stabilizer with LED Display

Feature: *With voltmeter display and voltmeter can be self-calibrated. The use of more advanced voltage microprocessor, voltmeter error ±0.05v, range 0~40v.(to ensure the accuracy of the voltmeter, please ensure that the input voltage above 4.5V) *The touch button toggles the measurement input or output voltage, and the indicator shows which voltage is being measured, and saves the setting, ev...