Bresser VENT AIR H Manuel D'instructions page 18

(24) CH switch
(25) °C/°F button
(26) Battery compartment
(27) Battery compartment cover
BEFORE YOU START
IMPORTANT!
1. Insert batteries for remote units before doing so for the main unit.
2. Place the main unit as close as possible to the remote unit.
3. Position the remote unit and main unit within the effective transmission
range.
When changing batteries always change batteries in the main unit as well
as all remote units and replace them in the correct order, so the remote
connection can be re-established. If batteries are exchanged in only one
of the devices (i.e. the remote sensor) the signal can't be received or can't
be received correctly.
Note, that the effective range is vastly affected by building materials
and position of the main and remote units. Due to external influences
(various RC devices and other sources of interference), the maximum
distance can be greatly reduced. In such cases we suggest to position the
main unit and the outdoor sensorat other places. Sometimes all it takes
is a relocation of one of these components of a few inches!
Though the remote unit is weather proof, it should be placed away from
direct sunlight, rain or snow.
POWER SUPPLY
Main unit (Weather station)
1. Remove the battery compartment cover (19).
2. Insert 3 batteries (AAA size 1.5V) into the battery compartment (18)
strictly according to the polarities shown.
3. Reinsert the battery compartment cover.
Outdoor sensor
1. Remove the battery compartment cover (27).
2. Move the CH switch (24) to the position (1-3) that corresponds with the
channel which will be used for transmission (select channel 1 if only
one sensor is connected).
3. Insert 2 batteries (AAA size 1.5V) into the battery compartment (26)
strictly according to the polarities shown.
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