Sterling power Pneumatic Tank GaugeSuffer from unreliable tank level gauges Never again with a Sterling Power USA Programmable Pneumatic Tank Gauge Pneumatic Tank Gauge No moving parts in the tank No electricity in the tanks Cannot stick corrode or jam up Not affected by any corrosive fluid Easy to replace or repair if faulty No need to test (set up in software program) Very accurate Alarms adjustable both ways Set for water, diesel, petrol, sea water Voltage 8 32 volts Self cleaning