ELING Tachometer RPM Gauge with Hour Meter for Car Truck Boat Yacht 0-3000RPM 85mm with Backlight

Open a 3-3/8" dimension and 2-3/4" depth hole, put gauge into it and fasten Speed Ratio: 1-300 adjustable, You can press the back button to adjust it. Idle speed is typically 600-800rpm. Details refer to owner manual. Suitable for diesel engine. Tachometer can get signal from engine, ignition coil, crankshaft sensor, or tacho sensor (be sold separately), etc..If you need tacho sensor, pls. search for ASIN NO. B07RN3HJ72 or B07RR8NQ45 It shows rpm and hour. Hourmeter cannot be reset. If you need other faceplate , pls. search for ASIN B0755KWGQR or B0755L5Z2Q Red Backlight, 9-32VDC(12VDC/24VDC) Working Voltage, 100% Waterproof and anti-fogging protection

Brand: ‎ELING Material: ‎Glass Item dimensions L x W x H: ‎3.35 x 3.35 x 2.76 inches Item Weight: ‎7.7 ounces UPC: ‎790996370484 Manufacturer: ‎ELING Product Dimensions: ‎3.35 x 3.35 x 2.76 inches Item model number: ‎910-00001 Is Discontinued By Manufacturer: ‎No Manufacturer Part Number: ‎EL0066 ASIN: B0755L49GG Customer Reviews: 3.7 out of 5 stars Date First Available: August 26, 2017