Feature:1. 0190ohm European standard signal input, which has stable performance.2. Highquality 316 stainless steel, ABS and PC materials, waterproof and antifog, flame retardant.3. With intelligent alarm, alarm value <13%, more reliable to use.4. Wide application, suitable for RVs, boats and yachts, which is a practical accessory.5. Great feature with its less power consumption, longer life, higher precision, etc.Specification:Condition: 100% Brand NewItem Type: Water Level GaugeMaterial: 316 Stainless Steel + ABS + PCOptional Color: Black, WhiteApplicable Models: Motor Homes, Ships, YachtsVoltage: 9-32V DCInput Signal: 0 - 190ohm (European Standard)Size: Approx. 52mm/2inAlarm Mode: Red Alarm Light FlashesAlarm Value: <13%Wiring:1. Black Wire: Negative power supply2. Red Wire: 12/24 (v)3. Blue Wire: Signal input4. Yellow Wire: Backlight.Package List:1 x Water Level Gauge1 x Manual