DWEII 3PCS DC 4-100V LED Digital Display Circular Two-Wire Voltmeter DC Digital Voltmeter Head Display Reverse Connection Protection

Note, The input voltage must not exceed 100V, too high a voltage will cause irreparable damage to the product. Main Specifications, Measuring range, 4-100V Power supply range, 4-100V Minimum start-up, 3.8V Allowable error, 1% Input impedance, >100K ohms Operating current, red <100mA, green <12mA, blue <12mA Refresh speed, approx. 300mS/time Display method, 3-digit round LED tube Display colour, red, green, blue optional Lead wire length, 20cm Overall dimensions, 33.8 diameter Opening size, diameter 30.3 Operating temperature, -10°C 65°C Package, 3pcs DC 4-100V LED Digital Display Circular Two-wire Voltmeter DC Digital Voltmeter Opening size, diameter 30.3 Refresh speed, approx. 300mS/time Display colour, red, green, blue optional Display method, 3-digit round LED tube Allowable error, ±1% Input impedance, >100K ohms Measuring range, 4-100V Lead wire length, 20cm Minimum start-up, 3.8V Operating current, red <100mA, green <12mA, blue <12mA Overall dimensions, 33.8 diameter Power supply range, 4-100V Operating temperature, 10°C 65°C.