La Crosse WS272, AIR QUALITY MONITOR Instruction Manual

1

Minutes (flashing)

Hours (flashing)

AIR QUALITY MONITOR

Instructions manual

INTRODUCTION:

Congratulations on purchasing this Air Quality Monitor with wireless
868 MHz transmission of outdoor temperature and display of indoor
temperature/humidity, and time. With only four easy to use function
keys, this innovative product is ideal for use in the home or office.

FEATURES:
AIR QUALITY MONITOR

 12/24h time display
 Temperature display in ºC / ºF
 Indoor and outdoor temperature display with MIN/MAX records
 Indoor humidity display in RH%
 Air quality alert
 Air quality indicator
 Low battery indicator

THE OUTDOOR TEMPERATURE TRANSMITTER

 Remote transmission of outdoor

temperature to the air quality monitor
by 868 MHz signal

 Rain proof casing
 Wall mounting case

TO INSTALL AND REPLACE BATTERIES IN THE
TEMPERATURE TRANSMITTER

The temperature transmitter uses 2 x AA, IEC,
LR6, 1.5V batteries. To install and replace the
batteries, please follow the steps below:

1. Remove the cover.

2. Insert the batteries, observing the
correct polarity (see marking).

3. Replace the battery cover on the unit.

TO INSTALL AND REPLACE BATTERIES IN THE AIR
QUALITY MONITOR

The air quality monitor uses 2 x C, IEC LR14, 1.5V battery. To install
and replace the battery, please follow the steps below:

1. Remove the cover at the back of the air quality monitor.

2. Insert batteries observing the correct polarity (see marking).

3. Replace compartment cover.

SETTING UP:

1. First, insert the batteries in the transmitter (see “Install and
replace batteries in the temperature transmitter” above).

2. Within 2 minutes of powering up the transmitter, insert the
batteries in the Temperature Station (see “Install and replace

batteries in the air quality monitor” above).

3. The indoor temperature/humidity and the time as 0:00 will be
displayed. If these information are not displayed on the LCD
after 60 seconds, remove the batteries and wait for at least 60
seconds before reinserting them. Once the indoor data is
displayed user may proceed to the next step.

4. The air quality monitor will start receiving data signal from the
transmitter. The outdoor temperature data should then be

displayed on the air quality monitor. If this does not happen
after 2 minutes, the batteries will need to be removed from both
units and reset from step 1

Note:

 The Equivalent CO

2

ppm will only be displayed after 30

minutes.

 The air quality sensor will take up to 5 days after inserting

batteries to condition itself for the room it is placed. If the unit is
placed into another room, there might be a reconditioning time
of several days as well.

BATTERY CHANGE:

It is recommended to replace the batteries in the unit regularly to
ensure optimum accuracy of the unit (Battery life See Specifications
below).

Please participate in the preservation of the
environment. Return used batteries to an authorised
depot.

KEY FUNCTIONS:

The Air Quality Monitor has 4 easy-to-use keys:

SET key:

 Press and hold to enter the manual setting modes: 12/24 hour

time display, manual time, and ºC / ºF temperature display
settings

+ key:

 Press to change, set, toggle all manual settings

AL key:

 Stop the LED air quality alert
 Exit the manual setting mode

MIN/MAX key:

 Press to toggle between MAX/MIN and current indoor

temperature/humidity and outdoor data

 Exit the manual setting mode

LCD SCREEN

* When the signal is successfully received by the temperature station,
the outdoor transmission icon will be switched on. (If not successful,
the icon will not be shown on LCD). The user can then easily see
whether the last reception was successful (icon on) or not (icon off).
On the other hand, the short blinking of the icon shows that a
reception is currently taking place.

MANUAL SETTINGS:

The following manual settings can be done in the setting mode:

 12/24 hour time setting
 Time setting
 ºC / ºF temperature display setting

Press and hold the SET button for about 3 second to enter the setting
mode:

12/24 HOUR TIME DISPLAY SETTING

1. “12hr” or “24hr” flashes in the LCD. (default 24hr)

2. Press the + key to select the “12hr” or “24hr” display mode.

3. Confirm with the SET key and enter the Manual time setting.

MANUAL TIME SETTING

To set the clock:

1. The hour digits start flashing in the time display section.

2. Use the + key to adjust the hours and then press SET key to go
to the minute setting.

3. The minute will be flashing. Press the + key to just the minutes.

4. Confirm with the SET key and enter the °C/°F temperature

unit setting.

°C/°F TEMPERATURE UNIT SETTING

The default temperature reading is set to °C (degree Celsius). To
select °F (degree Fahrenheit):

1. The “°C” will be flashing, use the + key to toggle between “°C”
and “°F”.

2. Confirm with the SET key and exit the manual settings.

AIR QUALITY ALERT:

The LED will flash when:

 Equivalent CO

2

ppm > 1500ppm:

LED alert blinks at a slower speed (1.5s).

 Equivalent CO

2

ppm > 2000ppm:

LED alert blinks at faster speed (0.5s).

Note about the air quality alert:

 The air quality alert will sound for a maximum duration of 30

minutes.

 To stop the alert, press any key.

AIR QUALITY INDICATOR

The air quality indicator is located on the bottom of the LCD. It
changes from GREEN (GOOD) to RED (BAD) by measuring the

Equivalent CO

2

ppm.

* The air quality value shown, after sensor conditioning, may differ +/­250 ppm.

Note:

A 9-level bar graph is used to indicate “GREEN” to “RED” air quality
level in the surrounding environment:

Levels

Equivalent CO

2

ppm

GREEN (level 1)

450 – 600ppm

Level 2

650 – 800ppm

Level 3

850 – 1000ppm

Level 4

1050 – 1200ppm

Level 5

1250 – 1500ppm

Level 6

1550 – 1800ppm

Level 7

1850 – 2100ppm

Level 8

2150 – 2400ppm

RED (level 9)

≥ 2450ppm

DISPLAY OF MIN/MAX TEMPERATURE AND HUMIDITY
RECORDS:

1. In normal display mode, press the MIN/MAX key once. The
MIN indoor/outdoor temperature and indoor humidity will be
shown in the LCD.

2. Then press the MIN/MAX key one more time, the MAX

indoor/outdoor temperature and indoor humidity will be shown
in the LCD.

3. Press one more time the MIN/MAX key to go back to the
normal display.

RESETTING THE INDOOR MAXIMUM/ MINIMUM
RECORDS

Note: The indoor/outdoor minimum and maximum and humidity

records will be reset at the same time

1. Press and hold the MIN/MAX key for about 3 seconds, this will
reset the indoor/outdoor MIN/MAX temperatures and humidity
to the current temperature and humidity.

TEMPERATURE TRANSMITTER

The outdoor temperature is measured and transmitted every 4
seconds.
The range of the temperature transmitter may be affected by the
temperature. At cold temperatures the transmitting distance may be
decreased. Please bear this in mind when placing the transmitter.

868 MHz RECEPTION:

If the outdoor data are not being received within three minutes after
setting up (or outdoor display always show “- -. -” in the outdoor
sections of the temperature station during normal operation), please
check the following points:

1. The distance of the air quality monitor or transmitter should be
at least 2 meters away from any interfering sources such as
computer monitors or TV sets.

2. Avoid placing the transmitters onto or in the immediate
proximity of metal window frames.

3. Using other electrical products such as headphones or
speakers operating on the 868MHz-signal frequency may
prevent correct signal transmission or reception. Neighbors
using electrical devices operating on the 868MHz-signal
frequency can also cause interference.

Note:
When the 868MHz signal is received correctly, do not re-open the
battery covers of either the transmitter or air quality monitor, as the
batteries may spring free from the contacts and force a false reset.
Should this happen accidentally then reset all units (see Setting up
above) otherwise transmission problems may occur.

The transmission range is about 100 m from the transmitter to the air

quality monitor (in open space). However, this depends on the

surrounding environment and interference levels. If no reception is
possible despite the observation of these factors, all system units
have to be reset (see Setting up).

Function keys

LCD

display

Battery compartment

SET key

AL key

+ key

MIN/MAX
key

Time

Low battery icon (air quality monitor)

Indoor

temperature

in ºC/ºF

Equivalent CO

2

ppm display

Indoor relative

humidity % RH

Outdoor reception
signal*

Low battery
indicator

(transmitter)

Flashing

Flashing

Air quality indicator

Bar graph

Equivalent CO

2

ppm (parts per
million) value*

Air quality indicator

2

POSITIONING THE OUTDOOR TEMPERATURE
TRANSMITTER

Before wall mounting, please check that the
outdoor temperature can be received from the
desired locations.

Mount the transmitter at a sheltered place. Avoid
direct rain and sunshine.

The transmitter is supplied with a holder that
may be attached to a wall with the two screws
supplied. The sensor can also be position on a
flat surface by securing the stand to the bottom
to the transmitter.

To wall mount:

1. Secure the bracket onto a desired wall
using the screws and plastic anchors.

2. Clip the remote temperature sensor onto
the bracket.

Note:
Before permanently fixing the transmitter wall
base, place all units in the desired locations to
check that the outdoor temperature reading is

receivable. In event that the signal is not received,
relocate the transmitters or move them slightly as this may help the
signal reception.

CARE AND MAINTENANCE:

 Extreme temperatures, vibration and shock should be avoided

as these may cause damage to the unit and give inaccurate
forecasts and readings.

 Precautions shall be taken when handling the batteries. Injuries,

burns, or property damage may be resulted if the batteries are
in contact with conducting materials, heat, corrosive materials
or explosives. The batteries shall be taken out from the unit
before the product is to be stored for a long period of time.

 Immediately remove all low powered batteries to avoid leakage

and damage. Replace only with new batteries of the
recommended type.

 When cleaning the display and casings, use a soft damp cloth

only. Do not use solvents or scouring agents as they may mark
the LCD and casings.

 Do not submerge the unit in water.
 Special care shall be taken when handling a damaged LCD

display. The liquid crystals can be harmful to user's health.

 Do not make any repair attempts to the unit. Return them to

their original point of purchase for repair by a qualified engineer.
Opening and tampering with the unit may invalidate their
guarantee.

 Never touch the exposed electronic circuit of the device as

there is a danger of electric shock should it become exposed.

 Do not expose the units to extreme and sudden temperature

changes, this may lead to rapid changes in forecasts and
readings and thereby reduce their accuracy.

SPECIFICATIONS:

Recommended temperature range:
+5ºC to +40ºC / +41ºF to 104ºF

Temperature measuring range:

Indoor : -9.5ºC to +59.5ºC with 0.1ºC resolution /

14.0ºF to +139.5ºF with 0.2ºF resolution
(OFL displayed if outside this range. In degree F
display, OFL will displayed when over 99.9ºF)

Outdoor : -9.9ºC to +59.9ºC with 0.1ºC resolution /

14.1ºF to +139.8ºF with 0.2ºF resolution

(OFL displayed if outside this range. In degree F

display, OFL will displayed when over 99.9ºF)

Relative humidity measuring range:

Indoor : 20% to 95% with 1% resolution (display “- -“ if

temperature is OFL, except when the temperature is

100ºF to 139.8ºF; display “19%” if < 20% and “96%”

if > 95%)

Equivalent CO

2

ppm measuring range:

450ppm to 6950ppm with 50ppm resolution (display OFL > 6950ppm)

Measuring intervals:

Indoor temperature checking interval : every 16 seconds
Indoor humidity checking interval : every 16 seconds

Outdoor temperature checking interval : every 4 seconds

Air quality level checking interval : every 3 minutes

Power consumption:

Air quality monitor : 2 x C, IEC LR14, 1.5V
Transmitter : 2 x AA, IEC LR6, 1.5V
Battery life : up to 12 months

Dimensions (L x W x H):

Air quality monitor : 112.6 x 49.5 x 112.4mm
Transmitter : 38.2 x 21.2 x 128.3 mm

LIABILITY DISCLAIMER:

 The electrical and electronic wastes contain hazardous

substances. Disposal of electronic waste in wild country and/or
in unauthorized grounds strongly damages the environment.

 Please contact your local or/and regional authorities to retrieve

the addresses of legal dumping grounds with selective
collection.

 All electronic instruments must from now on be recycled. User

shall take an active part in the reuse, recycling and recovery of
the electrical and electronic waste.

 The unrestricted disposal of electronic waste may do harm on

public health and the quality of environment.

 As stated on the gift box and labeled on the product, reading

the “User manual” is highly recommended for the benefit of the

user. This product must however not be thrown in general
rubbish collection points.

 The manufacturer and supplier cannot accept any responsibility

for any incorrect readings and any consequences that occur
should an inaccurate reading take place.

 This product is designed for use in the home only as indication

of the temperature and other weather data.

 This product is not to be used for medical purposes or for

public information.
The specifications of this product may change without prior
notice.

 This product is not a toy. Keep out of the reach of children.

No part of this manual may be reproduced without written
authorization of the manufacturer.

R&TTE Directive 1999/5/EC

Summary of the Declaration of
Conformity : We hereby declare
that this wireless transmission
device does comply with the
essential requirements of R&TTE

Directive 1999/5/EC.