Small size display digital panel meter - VOLTS meter Features: -Ultra-bright LED display -Automatic Sensing -Automatic Calibration upon zero reading for OV input -Low cost -High accuracy -Auto zero-setting -Auto polarity changing -Can be re-calibrated by adjusting the calibration potentiometer -Connection cable included -Easy to install, snap-in/ mount in panel -Ideal for auto, boat, industrial, commercial & domestic uses -Decimal Point position can be selected by user Specification: Power supply: DC 12V Digital display: 999 ( 3 digit) Digital display height : 14.00mm Digital display color : Blue / Red / Green available Operating temperaure: 0--50 oC Relative humidity: 20--80% Installation method: Inlay Dimension of case: ( W) 50* ( H) 26 * ( D) 23.5mm Tapping size: ( 46.5+ 0.1) x( 23.5+ 0.1) mm * High quality components( LSI) and high stability. The chip from Siemens, Panasonic, Microchip and so on. Connection from phoenix, Thomson. Potentiometers from Bourns, Tocos and others. * High efficient testing equipment: FLUKE , KEITHLEY , HP, HIOKIand on. And YAMAHA of Production equipment. * 17 years of export experience and 12 years cooperation with Panasonic on digital panel meter. Welcome and thanks for reviewing!