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instantly with the release of menu button. The LED indicator light next to the “S” or “L”
point outs which reading is being viewed. If the menu button is held in for longer than 3
seconds, the display doesn’t change.
8.2.
Test
The test function is used to assess the audible alarm.
Press and hold the menu button
for 5 seconds
. The alarm will ring 4 chirps as if it is in an alarm condition. Release the
menu button once the alarm begins to ring.
8.3.
Alarm Mute On/Off
This function allows you to silence the audible alarm. While in an alarm condition,
press
and hold the menu button for 15 seconds
. As you surpass the test phase, the alarm
will ring 4 chirps. The display will then read “Aoff”. Release the menu button
immediately and the display returns to normal condition. If the long-term reading
returns to controlled level, audible alarm will be reset to the on position. If desired, the
alarm can be reactivated by repeating the same process. On reactivation of the alarm,
the display will read “Aon”.
8.4.
Reset/Clear Memory
This function allows you to clear and/or reset the memory for both short–term and
long–term readings. This is a mandatory step whenever the detector is moved to a
different location.
Press and hold the menu button for 20 seconds
. The display will
read “CL”. Upon release of the menu button, the “CL” keeps flickering until the memory
has been completely cleared. Once the memory has been cleared, the display will read
“—“ for 48 hours until enough sample has been obtained to provide an exact reading.
8.5.
Calibration
Note for Radon Measurement Professionals
The U.S. Environmental Protection Agency (EPA), Radiation and Indoor Environments
National Laboratory (R&IE) has approved this device for radon gas level measurement.
If you are a licensed radon measurement professional using this device for home
inspections, etc., the EPA recommends a calibration and background check be
performed annually.
