3 In 1 time temperature voltage 0.56" Digital Panel DC 200V LED Digital Meter LED digital voltage meter Car voltage meter The size of the volume of goods have SMD process, reversed does not burn, the numbers do not jitter,Display Size: 61mm*29mm*17.5mm, Installation dimensions: 58mm*26mm*17.5mm, Power supply: 7-30V, bright LED digital tube, red, blue, green and yellow colors optional, Four display modes:  only time  Show only temperature  only display the voltage  time temperature voltage alternating display Voltage: Voltage Range: 0-33v, error of  0.02V, Range: 0-200v, error of  0.1V,Power 7-30v. Two kinds of ranges