1The pointer is driven by a stepping motor to accurately display the engine speed, with high indication accuracy and relatively simple drive control. The Lcd display clearly shows the mileage. 2Stepping motors are used in a full range of stepping gauges and have the characteristics of low power consumption, long life, and high precision. 9?32V ultra?wide long?term working voltage, up to 36V (1 minute). 3It is snapped together with the wiring harness connector to achieve the best safe connection, so that the pressure gauge can work normally even under strong vibration. 4Can be applied in all kinds of vehicle modification, and can be used for engine/generator sets, ships, construction machinery, agricultural machinery, automobile modification, etc. 5With IP67 waterproof and dustproof function, 316L stainless steel bezel, corrosion?resistant, it is durable even in acid, alkali and humid environments, and equipped with curved glass, good anti?fog effect.