3 2/ 1 red digital display voltage meter/ voltmeter XL5135V( DC/ DC) DC power supply--measuring DC voltage FEATURES -Ultra-bright LED display -15.00mm digit height -Polarity: Automatic Sensing -Automatic Calibration upon zero reading for OV input -Low cost -High accuracy -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: DC5V/ 12V/ 24V AC110V/ 220V/ 9V Digital display: 3 1/ 2 ( 1999 count) Relative humidity: 20--80% Installation method: Inlay Tapping size: ( 76+ 0.1) x( 39+ 0.1) mm Dimension: ( W) 79 X ( H) 42.5 X ( D) 25.5mm Net weight: 50g * Easy to read under the high light( sunshine) * High quality components( LSI) and high stability * 70-80% components from internaitonal well know manufacturers.The chip from Siemens, Panasonic, Microchip and so on. Connection from phoenix, Thomson. Potentiometers from Bourns, Tocos and others. * We have high efficient testing equipment: FLUKE , KEITHLEY , HP, HIOKIand on. And YAMAHA of Production equipment. Our daily production capability is 3000-4000pcs. * Many years of export experience and 12 years experience cooperation with Panasonic Our factory promises: reasonable prices, short production time and satisfactory after-sales service. We hope to cooperate with more customers for mutual development and benefits.