Features Made of 316 stainless steel material, sturdy and anti-fog, flame retardant. Wide application, suitable for cars and boats, which is a practical accessory. Smart alarm function: alarms when water temperature exceeds 95C, with a red alarm light flashing. IP67 waterproof rating, resistant to harsh marine environments. Simple installation, no complicated tools required, convenient to use. Specification Condition: Item Type: Cooling Water Temperature Gauge Material: 316 Stainless Steel Applicable Models: Suitable for cars and boats Waterproof Rating: IP67 Diameter: Approx. 52mm / 2in Indicating Range: 40-120C Alarm Mode: Red Alarm Light Flashes Alarm Value: Water Temperature > 95C Input Signal: 0 - 190ohm (European Standard) Package List 1 x Cooling Water Temperature Gauge 1 x Manual