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O.A.T. (OUTSIDE AIR TEMPERATURE) GAUGE/Displays Celsius, Fahrenheit, pressure altitude, density altitude and DC voltage, 14V to 28V input, Temperature range: -55 degrees to 100 degrees Celsius and -67 degrees to 212 degrees Fahrenheit, Density Altitude: -

O.A.T. (OUTSIDE AIR TEMPERATURE) GAUGE/Displays Celsius, Fahrenheit, pressure altitude, density altitude and DC voltage, 14V to 28V input, Temperature range: -55 degrees to 100 degrees Celsius and -67 degrees to 212 degrees Fahrenheit, Density Altitude: -
O.A.T. (OUTSIDE AIR TEMPERATURE) GAUGE/Displays Celsius, Fahrenheit, pressure altitude, density altitude and DC voltage, 14V to 28V input, Temperature range: -55 degrees to 100 degrees Celsius and -67 degrees to 212 degrees Fahrenheit, Density Altitude: -
O.A.T. (OUTSIDE AIR TEMPERATURE) GAUGE/Displays Celsius, Fahrenheit, pressure altitude, density altitude and DC voltage, 14V to 28V input, Temperature range: -55 degrees to 100 degrees Celsius and -67 degrees to 212 degrees Fahrenheit, Density Altitude: -10,000 to 30,000', Pressure Altitude: -1,000 to 62,700', 2 1/4 rear mount. Includes temperature probe. PMA 655-2
M655 5 Function Indicator Gauge | 2-1/4 Mount, O.A.T. ºC/ºF, Pressure/Density Altitude, DC Voltage

The 655 is a multi-functioning gauge combining readouts for: outside air temperature ºC/ºF, pressure altitude, density altitude, and aircraft voltage. The digital probe with 12 ft cabling sends an accurate reading to the panel mount, super bright, sunlight readable display.

The 655-2 is 2-1/4" standard clock mount or front mount with temperature probe and orange LED lighting.


  • Orange LED display
  • Displays - outside temp ºC/F, pressure/density altitude, & DC voltage
  • Adjustable flashing altitude alarm
  • Push-button display selection
  • Minimum panel space
  • Lightweight
  • Automatic dimming
  • Miniature remote probe
  • Engraved faceplate
  • FAA - PMA

Product Codes

Mfr Part No:655-2
ECCN:7A994
PMA:PQ1062NM
SCHEDULE B CODE:9104.00.0000


Weight: 5 ozDimensions: 2.375 x 1.45 x 2.375 inDensity altitude: -10,000 to 30,000 ftPressure altitude: -1,000 to 62,700 ftTemperature range: –55°C to + 100°C ± 2°C (typical)Voltage range: 10V to 32V ± .2 volts (typical)Input voltage: 14 or 28 VInput current: .35 amps max

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  • Stock: Warehouse
  • Manufacturer Part #: 655-2
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