Two wire connection, with reverse polarity protectionDisplay color: Yellow/Red/Green/BlueTwo-wire Measurement range: DC 2.5-30V, 2.7-30V, 3-30VMin. input voltage: DC 2.5V, 2.7V, 3VMax. input voltage:DC 30V(Higher than this voltage is has a risk of overburning)Permissible error: 1%(±1 digit)Display mode: three digit 0.28'LED digital tubeSize: 3.30 x 1.10 x 0.70cm (L*W*H)Speed ratio: about 200ms/timeCurrent Consumption: Install hole size: 23 x 10.5mmWorking temperature: -10~ +65 Package Included: 1 x 0.28" Mini DC Digital Voltmeter
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