(knots). The low-friction cup vane freely rotates in response to air flow. An internal thermistor allows the AN400 to measure air temperature in Centigrade or Fahrenheit units. This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service.
To freeze the LCD display, momentarily press the HOLD button. The 'HOLD' icon will appear on the LCD and the reading will remain unchanged. Momentarily press the HOLD button again to return to normal operation (the 'HOLD' icon will switch off). AN400 V3.0 12/06...
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The LCD will indicate “n” in the main display and “CLr” in the lower display. Momentarily press the ▼ button to display “Y” and “CLr”. Press the HOLD/Unit button. When the LCD indicates “nuLL” and “CLr”, the memory has been cleared. AN400 V3.0 12/06...
Maintenance Battery Replacement The AN400 is powered by four 1.5V AAA batteries. When the low battery icon appears on the LCD or if the display does not switch on when the POWER button is pressed, replace or install the batteries.
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