2" 52mm Boat Water Temperature Gauge Temp Meter 40-120℃ 7 Colors for Car Truck2" 52mm 7Colors LED Water Temperature Gauge Temp Meter 40-120℃ for Car Boat Marine Truck Feature IP67 waterproof and dustproof gradeWith ultra-wide working voltage design (long-term operating voltage:9-32v,maximum up to:36v)Gauges have many kinds backlight color (red.yellow.orange.green.blue.purple.white),customers can...