Feature 1Accuracy and Precision: Boat tachometer gauge panels have high precision indicators to provide accurate and quick information on the rpm of your boat's engine. 2Alarm Function: The tachometer instrument panel has an alarm function, which can remind the user of abnormal conditions of the engine in time to ensure the safety of the engine. 3Fine Processes: Tacho gauge panels are made of metal and plastic materials and have been carefully designed and manufactured to be durable and stable, and to maintain good performance over a long period of use. 4Enhanced Safety: By providing real time accurate information about the boat's engine speed, a tachometer can help ensure the engine is running at optimal levels, preventing engine damage or failure. 5Easy Installation: Installing the tacho meter panel is as simple as preparing suitable holes in the meter panel and securing the meter with nuts and retaining clasp.Item Type:BoatTachometerPanelMaterial: Metal + PlasticSpeed: 8k (80*100rpm)Opening Size: Approx. 180 x 140 x 85mm / 7.1 x 5.5 x 3.3inOperating Voltage: 12vWorking Current: 150maOperating Temperature: -30 - +70Storage Temperature: -40 ~ + 85Alarm: No Water/No Oil or Overheating BuzzerInstrument: TachometerEng/Stop: Stop the EngineIgnition Key: Off: Stop; On: Power Supply; Start: StartLamp: Controls the Instrument BacklightTemperature: The Operating Temperature Is Higher Than 96 Red Light WarningPressure: Work When the Oil Pressure Is Below 0.8barPreheat: Preheat the Engine and Maintain a Stable (Starting) Temperature When Not RunningApplication: Suitable for Yachts, Ships, Speedboats, Etc .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xBoatTachometerPanel2 x Keys1 x User Manual