RPM Gauge 8000rpm 6000rpm 3K-8K 85MM Diesel Engine Tachometer REV Counter with LCD Digital Hourmeter 7Colors Backlight 12V/24VRPM Gauge 8000rpm 6000rpm 3K 8K 85MM Diesel Engine Tachometer REV Counter with LCD Digital Hourmeter 7Colors Backlight 12V 24V Package 1 1X 85MM Tachometer 1X Instruction Package 2 1X RPM Sensor The sensor needs to be purchased separately, the tachometer does not include a sensor, please know, thank you Feature: Waterproof: IP 67 Excellent anti fogging function; With curved glass( with anti fog function). 316 Stainless steel bezel with curved glass;