Voltmeter Module with 7-Segment 0.28 inch 0-100V (3 Wires)

From the shop's description

Voltmeter Module with 7-Segment 0.28 inch 0-100V (3 Wires) Mini voltmeter module with 0.28 inch display, which can display a voltage between 0 and 100VDC. It is provided with 3 wires, two for power and the third for voltage measurement. Attention , the supply voltage is between 4 and 30 VDC . The supply is made through the Red and Black wires. The third wire (White or Yellow, depending on the batch) will be placed on the Cathode (+), which actually measures the voltage. To work, it is necessary that the circuit has a common GND. The module has mounting ears. of 33mm. The decimal point moves automatically. Specifications: Supply voltage: 2.5 – 30VDC Measured voltage: 0 – 100VDC Operating current: <20mA Display: 3 characters with a decimal point, digital tube Display size: 0.28 inch Display color: Green or Red (According to your choice) Refresh rate: 200ms Accuracy: +-1% declared. From the tests, at low voltages there is a gap of up to 0.4V. Operating temperature: -10 – 65 degrees C Dimensions mm: 33 x 10.7 x 7.5mm (ears included) Wire length: 10cm approximately Number of threads: 3 Wiring Lead Length: 15cm Red: Power supply + (positive) Black: Power supply – (negative) Yellow/White: Sense (voltage sense wire).