4
GETTING STARTED
• Insert the supplied batteries. Measurement will start au-
tomatically after about 3 minutes. This is indicated by a
flashing measurement indicator at the top right of the
screen
• If the screen displays the error message ‘Err’ and a number:
press the RESET button, remove the batteries and put them
back in
• Position the unit in a living area (for example a bedroom
or living room), and in a location that is representative of
the air that is breathed in this room
• The unit should not be exposed to direct sunlight or elec-
tromagnetic radiation; it should be positioned lying flat at
least 25 cm from the nearest wall, at least 50 cm above the
floor, and at least 150 cm from the nearest door, window
or ventilation device
• To permit self-calibration, the unit should remain untouched
for the first few minutes after start-up
HOW TO USE THE MONITOR
• The long term average (LONG TERM AVERAGE) is the aver-
age radon value over the last year (updated once every 24
hours)
• The short term average (SHORT TERM AVERAGE) alternates
between showing the radon value over the last day (1 DAY
– updated every hour) and over the last 7 days (7 DAYS –
updated once every 24 hours)
