Universal mini digital voltmeter module with a range up to 30V. A convenient way to make your own meter in your device. The voltmeter has a potentiometer to calibrate the its readings. Technical data Measured input voltage DC 4.5V 30V - the meter is powered from the measured voltage LED digit size: 0.26 "(LED display size 10x23mm) Refresh rate: 500ms / 1 measurement Accuracy of measurement: 1% Working temperature -10 * to 65 * C Dimensions: 31 x 12 x 10 mm (whole) Connection: red - power plus (2.5-30V) black - minus https://elecena.pl/product/22621260/dc-4-5-30v-led-voltmeter-module-0-28-red 2023-02-23 https://elecena.pl/product/22621260/dc-4-5-30v-led-voltmeter-module-0-28-red 2025-10-29