12 in 1 Gauge: The PT100 thermistor senses the temperature change, sets the high temperature prompt to protect the engine, and displays the external power supply voltage in real time. 2Temperature Function: Realtime detection of current temperature, temperature range ? 40 ?+300 (? 40 F+572 F). High temperature warning can be set, the default is 100 . 3Voltage Function: Realtime detection of the current voltage of the power supply, the voltage range is 9?16V. The high voltage prompt range is 10?16V, and the low voltage prompt range is 9?15V. 4Data Storage Function: Voltage temperature gauge automatically stores all data in case of power failure, and the storage time can be more than 20 years. 5Application Range: Widely used in lawn mowers, motorcycles, go karts, ATVs and other vehicle industries; outboard engines, yachts and other equipment or engines that require temperature measurement.