Feature 1、With rev alarm function, oil pressure alarm function, temperature alarm function and engine failure alarm function. 2、Made of 316 stainless steel, PVC and ABS, it can be used for a long time even in acid, alkali and humid environments. 3、IP67 waterproof and dustproof grade, with curved glass, anti‑fog, no need to worry about the damage bad weather may cause. 4、Widely used, suitable for a full range of stepping instruments, can be used for engine/generator sets, ships, construction machinery, agricultural machinery, car modification, etc. 5、It has the characteristics of low power consumption, long life and high accuracy. With ultra‑wide working voltage design, long‑term operating voltage is 9 to 32V,maximum can up to 36V. 6、The harness connector has a snap to achieve the best and firm connection, so that the pressure gauge can work normally even under strong vibrations. 7、Each of our gauge will be shipped with a detailed product manual. The manual will clearly describe the installation, wiring and use functions of the product, so don't worry about the situation that it will not be used after purchase. Condition: Item Type: Tachometer Material: 316 Stainless Steel+ABS+PVC Install Diameter: Approx. 85mm (3-3/8in) Indication Range: 0-7000RPM Working Voltage: 9-32V DC Connection Type: Row insert Backlight Color: Red Operating temperature: -30-75℃ Storage temperature: -40-85℃ Protection Grade: IP67, back cover is IP5 Applicable Engine Range: only suitable for Suzuki Engines Connection Method: Red wire connect positive pole,blue wire connect negative pole,black signal wire connect engine sensor,orange backlight wire connect positive pole Installation Instruction: 1. Opening a hole in the panel (your cabin board and dashboard) with a diameter of 85mm,insert meter into the hole,the panel corresponding to the instrument panel is marked with a convex table,and open a small notch in this location,to ensure that there is at least 85mm (3-3/8in) of the instrument panel at the back of the instrument. 2. After the instrument is mounted in the panel,screw down with a fixed ring. 3. Connect the wire,the instrument housing is directly connected to the 12/24v power supply. 4. Insert wire harness,firmly locked in the table. Package List 1 x Tachometer1 x Manual Note Each product is packaged in a hard carton, and the bubble cotton is filled with drop resistance, ensuring that your order remains in a state before receipt.