Features: 3 1/2 LED digital panel meter; single 5V DC operation; high input impedance: > 100Mohm; display: 3 1/2 digit LED; input sensitivity: 200mV FS; power supply: 5V DC; decimal point selection: with wire jumper; automatic polarity indication; figure height: 0.56"; sampling rate: 2 - 3 readings / sec.; guaranteed zero reading for 0V input; high input impedance: > 100Mohm; accuracy: ¦ 0.5%; power consumption: 50 - 60mA; size: 2.7" x 1.7".