Adjustable DC-DC Converter Module Step-Down Voltage Regulator 4-40V

1. Press the button to change the input or output voltage measurement. The indicator light will show which voltage is being measured and will retain the last setting, even if the device is turned off and then back on. 2. The voltmeter can be turned off by pressing and holding the switch for more than 1 second and less than 4 seconds. 3. The terminal block eliminates the need for a soldering iron, and the wire connection point is preserved. The input voltage is 4.0 ~ 40 V (the input voltage must be more than 1 V higher than the output voltage). 4. The output voltage range is continuously adjustable from 1.25 V to 37 V (the input voltage must be more than 1 V higher than the output voltage). 5. The maximum output current can reach 3 A, and the common stable operating current is 2 A. Specification: Features: With voltmeter display, voltmeter error ± 0.1 V, range 0 ~ 40 V. Press the button to change the input or output voltage measurement; the indicator light shows which voltage is being measured and retains the last setting, even if the power is switched off and then on again. The voltmeter can be switched off by pressing and holding the switch for more than 1 second and less than 4 seconds. With the terminal block, no soldering iron is required, and the wire connection points are maintained. The input voltage is 4.0 ~ 40 V (the input voltage must be more than 1 V higher than the output voltage). The output voltage range is continuously adjustable from 1.25 V to 37 V (the input voltage must be more than 1 V higher than the output voltage). The maximum output current can reach 3 A, and the common stable operating current is 2 A. Using an internal oscillation frequency of 150 kHz, it belongs to the second generation of switching voltage regulators, with low power consumption and high efficiency. Specification: Material: Epoxy resin; Voltmeter: Error ±0.1 V; Measurement range: 0 ~ 40V Input voltage: 4 ~ 40V Adjustable output voltage: 1.25 ~ 37V Maximum output current: 3A Stable current: 2A Internal oscillation frequency: 150KHz Package list: 1 * module User manual: Input and output voltage measurement error calibration function: Press and hold the switch for more than 4 seconds. After it enters the voltage measurement error calibration function, the indicator light will illuminate (calibration input terminal) and the digital tube will flash to display the correction value (factory setting is 0.0). Press the button to change this value (value range is -0.5 ~ 0.5, unit is V). A positive number indicates calibration upwards and a negative number indicates calibration downwards. After adjusting the comparison value of the output To perform the calibration, press and hold the button for more than 2 seconds, then release it. After releasing the button, the output indicator will light up (calibration output) and the output calibration value will be displayed. The adjustment method is the same as for the input. After comparing the output value, press and hold the button for more than 2 seconds. After releasing the button, the set value will be saved and the display will return to normal. The adjusted correction value will take effect immediately, and power will not be lost. Note: If the input voltage is less than 4V, the onboard voltmeter will not function and will not display a reading.