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Installing the Batteries
Remove the battery cover on the rear of the device and install 2 x
AA size standard alkaline batteries, ensuring the polarity is correct.
Use only alkaline type AA batteries. Be careful not to lose the tiny
screw(s).
Turning on the Monitor (for the first time)
After installing the batteries, the monitor will automatically turn
on. There is no need to press the on/off button. The display shows
immediately 88.88 for a second and will then show a reading above
20.94.
Press the calibration button for the monitor to display 20.94, this
may need to be repeated when the monitor is rst used.
Note: Follow the full-scale calibration procedure to start using the monitor,
(see special note overleaf).
Turning on the Monitor (thereafter)
Press the standby button on the right (on/off) and the monitor will
turn on. Initially it will display 88.88 on the screen a second. The
display will then show a reading above 20.94.
TURNING ON the MONITOR