3 In 1 Gauge:- Fitment: for Universal Gasoline/Diesel Car Boat etc - Working Voltage: 9-32V - 52mm GaugeGauge Alarm Set:Oil Temp more than 108 ; Water temp more than 95; HTG more than 75%; Oil pressure less than 0.8bar; Fuel Level less than 13%; Fresh Level less then 13%; 12v System less than 11.5V; 24v System less than 22V.Using operation:1.,model gauge , level sensor :model gauge, level sensor:Default input signal is 0~190ohm when Switch connect to Ground input signal is 240~33ohm. 2. Default input signal is 0~190ohm when Blue,Yellow and White are connect to Ground 3 seconds,input signal is 240~33ohm.Technical parameters:Operatingvoltage: 9~32VDC Operating current: 60mA Operating temperature: -20~ 70 Storage temperature: -30~ 80Water Level+Sewage Level+Voltmeter:- Water Level Gauge: 0-190ohm - Sewage Level Gauge: 0-190 ohm - Voltmeter: 8-32V - Fit for Water/Sewage Level SensorWater Level Sensor:- Protection ank: IP67 - Resolution range: 21 mm - Assembly: SAE standard 5 holes - Rated current for alarm switch: 500mA - Operating temperatures: - 40 to 85 Celsius - Fit for Fuel Level Gauge and Water Level Gauge - Sensor Length :150mm, 200mm, 250mm, 300 mm ,350 mm ,400mm, 450 mm - Mounting: 5 pieces of M5 screws and 2 mm thick gasket - Output signal: 0~190 ohm (Standard European), fit for water /Fuel Level Gauge: 0-190ohmSewage Level Sensor:- Protection ank: IP67 - Resolution range: 21 mm - Assembly: SAE standard 5 holes - Rated current for alarm switch: 500mA - Operating temperatures: - 40 to 85 Celsius - Fit for Fuel Level Gauge and Water Level Gauge - Sensor Length :150mm, 200mm, 250mm, 300 mm ,350 mm ,400mm, 450 mm - Mounting: 5 pieces of M5 screws and 2 mm thick gasket - Output signal: 0~190 ohm (Standard European), fit for Sewage Level Gauge: 0-190ohm