A B C
1
A-B-C Switch
set to match
display unit
6
3-in-1 Sensor Setup
SETUP
2
Install Batteries
4 AA batteries
2
1. Press the release lever and pull off
the lower housing of the sensor.
2. Remove the battery compartment
cover. Take note of the A-B-C
switch setting inside the battery
compartment.
3. Insert 4 x AA batteries into the
battery compartment, as shown.
Follow the polarity (+/-) diagram
in the battery compartment.
4. Replace the battery cover and
lower housing of the sensor.
Set the A-B-C Switch
The A-B-C switch is located inside
the battery compartment. It can be
set to A, B or C. However, you
must select the same letter choices
for both the sensor and the display
unit in order for the units to
synchronize.
Install or Replace Batteries
Batteries MUST be installed for this
product to operate. AcuRite
recommends high quality alkaline
or lithium batteries for the best
product performance. Heavy duty
or rechargeable batteries are not
recommended.
The 3-in-1 sensor requires lithium
batteries in low temperature
conditions. Cold temperatures can
cause alkaline batteries to function
improperly. Use lithium batteries in
the 3-in-1 sensor for temperatures
below -4ºF / -20ºC.
1
15
Calibration
Calibrate Temperature & Humidity
The indoor / outdoor temperature and humidity readings can be calibrated on
the display unit to improve accuracy. Calibration can improve accuracy when
3-in-1 sensor placement or environmental factors impact your data accuracy.
1. Locate the “ ”, “SET”, and “ ” buttons on the back of the display unit.
Press AND HOLD all three buttons for at least 5 seconds.
2. The temperature will begin flashing, indicating it is ready to be calibrated.
3. Press the up or down arrow buttons to calibrate the data value higher or
lower from the actual reading.
4. Press the “SET” button to confirm the calibration adjustment. Note: The “ ”
icon remains illuminated next to calibrated values.
5. The next calibratable data will begin flashing, indicating it is ready to be
calibrated. Repeat Steps 1 - 4 to calibrate additional data.
Calibrate Barometric Pressure
The Weather Center default pressure mode is “AUTO”. In auto mode, the
pressure will calibrate itself over a 14 day Learning Mode. Barometric pressure
can be manually calibrated:
1. Locate the “ ”, “SET”, and “ ” buttons on the back of the display unit.
Press AND HOLD all three buttons for at least 5 seconds.
2. Press the “SET” button to cycle through data until the pressure value begins
flashing.
3. Press the “ ” or “ ” button to select “MANUAL” pressure mode.
4. Press the “SET” button to confirm.
5. Press the “ ” or “ ” buttons to calibrate the pressure value higher or
lower from the self-calibrated reading.
6. Press the “SET” button to confirm the calibration adjustment. Note: The “ ”
icon remains illuminated next to the calibrated value.
