Other Part Number:// Country/Region of Manufacture:// Interchange Part Number:// Special Features:// Material Type:// Item Weight:about 10g Item Height:9mm Item Width:11.5mm Item Length:30mm Manufacturer Part Number:// Two-wire Measurement range:DC 2.5~31.5V Working Temperature:-10C-65C Minimum input voltage:DC 2.5V Maxmum input voltage:DC 40V Display mode:three digit LED digital tube Speed ratio:about 100ms/time Lead wire length:15cm Package:1x Digital Voltmeter Date:2019-10-29 DC 2.5-30V Digital Voltmeter Voltimetro Blue Red LED Volt Meter Gauge Voltage Meter Display color: red/ yellow / blue / green.(Please choose the color before you buy it.) Two-wire Measurement range: DC 2.5~31.5V Working Current: Working Temperature: -10C-65C Minimum input voltage: DC 2.5V(Lower than 2.5V, the brightness will be weakened, but this will not affect the accuracy of measurement) Maxmum input voltage: DC 40V(Higher than this voltage is has a risk of overburning) Permissible error: 1%(1 digit) Display mode: three digit LED digital tube Size: 30 x 11.5 x 9mm (L*W*H) Speed ratio: about 100ms/time Lead wire length: 15cm 100% Brand new and high quality Accuracy automatic adjustment ,when less than 10V accurate to 0.01V, more than 10V accurate to 0.1V And it is self-powered version, Two wire connection, with reverse polarity protection No power supply needed Package Included:1x Digital Voltmeter