Simple and Easy.
- Customer
Aaron H. from Washington
- Aircraft
Cessna 140
- EI Instrument
8am–4:30pm PST M–F
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The FL-1 offers pilots an accurate, stable digital fuel level for single tank configurations. Not only does the FL-1 display the tank level digitally, it also provides a 210° graphical arc for immediate, quick reference of the tank fuel level.
The FL-1 can be ordered to work with a resistive probe (FL-1R-12 or FL-1R-24, depending on 12 or 24 volts), a capacitive probe (FL-1CA) or a 0-5 volt output such as with some Skysports probes (FL-1V). Please be sure to specify which model you need when you order your FL-1.
The FL-1 is not STC’d for installation in a certified aircraft.
When in flight, fuel will slosh around in the aircraft fuel tanks, creating irritating readings that constantly jump around. The FL-1 has a Fuel Slosh Stabilization calibration point that averages fuel level readings, creating a much more stable, but still extremely accurate fuel reading. Calibrate between a couple of seconds all the way up to over a minute of fuel slosh averaging.
The FL-1 allows installers to program from as little as two all the way up to nine fuel level calibration points in the fuel tank. This flexibility eliminates inaccuracies due to non-linear fuel tanks.
The FL-1 is a simple instrument to install and program. Clear step-by-step instructions make programming the instrument easy to calibrate to your fuel tank senders.
The pilot can easily select between displaying fuel level in Liters, Gallons or Lbs with a switch on the front of the instrument panel.
FL-1 Single Fuel Level Package
FL-1RA-12, FL-1RA-24, FL-1CA, FL-1V
$600

Dimensions
2.5″ x 2.5″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
Instrument: 11 oz
Fuel Flow Transducer: 6 oz
Power Requirements
7.5 to 35 Volts
Typical: 0.1 amps @ 12 Volts
Intensity Control
Independent control lines allow pilots to adjust the intensity of both the Green Indicator Lights and the LCD Backlight during instrument operations. See downloads page for more information.

Simple and Easy.
This is a high quality instrument and works perfectly. Well designed, well constructed and well documented. I couldn’t be more pleased!
Responsive customer service, kudos to [customer service].
We chose your product because of the great support and reputation your company sustains.
I love my new EGT. Very accurate and has ambient air temperature so I know how cold my engine is before I start it. Easy to see lighting.
Electronics International supports their products. Rare repairs are done quickly.
The reviews online were very good. Customer service has been great.
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
The display is large and clear. The functions are simple and easy to use. Great purchase decision.
The layout and quality is impressive.
Very impressed with the clarity and readability of the CGR-30P gauge.
Very complete and thorough packaging. Well-prepped wiring harnesses. Quick and efficient turnaround time. Great communication throughout the process.