Universal digital voltmeter module. A convenient way to make your own meter in your device. Technical data Input voltage: 4V-30V DC The meter is powered directly from the measured voltage. Only two wires for connection Digit Size: LED 0.56" Refresh rate: 1 measurement / 500ms Accuracy of measurement: 1% Working temperature: -10 * to 65 * C Weight: 3.6g Connection: + red is the positive power supply and DC voltage measurement - black is a negative https://elecena.pl/product/22623349/4-30v-dc-voltmeter-in-housing-0-56-led-blue 2023-02-23 https://elecena.pl/product/22623349/4-30v-dc-voltmeter-in-housing-0-56-led-blue 2025-10-28