Product Feature Battery Level Meter: It used on battery powered device to state the remain battery capacity;10 LED bars display the power percentage by different colors(1 red, 2 yellow,7 green);Workable on lead-acid battery,Wide operation voltage range 48V. Capacity Display: With a control terminal ‘C’.Only connect the C terminal to the power positive or the positive terminal,it can work to measure the current battery capacity and lit the corresponding LED bar. Installation: Easy to install;Snap-in design and fits standard panel cut-out;panel cutout. size:Approx 37 25mm(1.46×0.98 inch). Other:This fuel gauge is not suitable for cars and motorcycles, because cars and motorcycles are charging while driving.Product SpecificationType 48V Battery Indicator MeterItem Weight 1.06 ouncesProduct Dimensions 2.09 x 1.26 x 0.98 inchesVoltage 48 VoltsDisplay Screen< 10 Segment LED Bar GraphOperate Temperature -30 C- +85 CPin Type +,-,CCase Style Front Panel MountPackage Included 1 x 48V LED