0.56 inches 3 Red LED Digital Voltmeter (DC 3.2 ~ 30V)
Voltmeter basic performance parameters are as follows: -Opening size: 45.5mm * 26.5mm -Dimensions: 48mm * 29mm * 21mm / -Range: DC3.2-30V 2 line access -Display: three 0.56 LED digital tube -Display color: red -Refresh rate: about 500ms / times -Accuracy: 1% (+ / -1 words) -Supply voltage: DC3.2-30V (with the measurement of line)