ConnectedFinland Airwits PM User manual
Unlocking the huge potential of mass market IoT
Airwits PM
User Manual
Content
•Warnings
•Installation
•Usage
•Uplink
•Downlink
•Support
Warnings
•MAINTENANCE
-In case of malfunction, deliver the device to the supplier. Do not open the device.
•TRANSPORTATION
-Do not remove packing material and do not repack the device unless necessary.
Contact the shipping agent before transportation. The device contains a lithium metal
battery which contains about 11 grams of lithium.
•DISPOSAL
-Return the device to a disposal station which collects electronics waste and batteries.
Warnings
•OPERATION
-Protect the device from moist, water, and dirt.
Installation
1. Save the identifier and the key of the device.
1.1 The identifier and the key are on the label on the
back cover of the device.
1.2 You can also read the identifier and the key using
the QR code.
2. Install the wall mount carefully to the surface of
your choosing (e.g. to the wall).
3. Turn the device on using the power switch at the
bottom of the device. The switch is inside of the
opening.
4. Attach the device to the wall mount.
1.
2.
3.
Usage
•If the device has been connected to FoxerIoT platform, you do not need to do
anything else.
•Otherwise you must register the device using the identifier and the key of the
device at backend.sigfox.com. For further details, please see the
documentation of Sigfox.
Uplink
BYTES
DESCRIPTION
1
– 2
Temperature
3
Humidity
4
–5
PM2.5
concentration
6
– 7
PM10 concentration
Uplink
•Conversion formulas
-Temperature < value > / 10 –40 ( C )
-Humidity < value >( % )
-PM2.5 concentration < value >( ug / m3 )
-PM10 concentration < value >( ug / m3 )
Uplink
•Example
-Message 0x0271320048005C
-Temperature 0x271 / 10 –40 = 625 / 10 –40 = 22,5 C
-Humidity 0x32 = 50 %
-PM2.5 concentration 0x0048 = 72 ug / m3
-PM10 concentration 0x005C = 92 ug / m3
Downlink
•The settings of the device can be updated with the downlink message
-The device requests new settings every 50 messages
•You must be very careful when you update the settings
-The settings affect both the subscription and the battery life of the device
•The downlink message is optional
-If the downlink message is not sent, the device continues with the current settings
Downlink
•By default, the device measures and transmits every 30 minutes
•The measurement and transmission intervals can be adjusted with the settings
-The device transmits if the PM concentrations have changed more than the threshold
after the previous transmission
•Check that the new settings are valid before applying them
-The measurement interval cannot be longer than the transmission interval
-The transmission interval must be multiple of the measurement interval
•If the new settings are not valid, the device continues with the current settings
Downlink
BYTES
DESCRIPTION
1
Transmission
interval
2
Measurement
interval
3
PM2.5 delta
threshold
4
PM10 delta
threshold
5
– 8
Not
applicable, set to zeroes
Downlink –Transmission Interval
VALUE
INTERVAL
VALUE
INTERVAL
0
NOT APPLICABLE
8
NOT APPLICABLE
1
10 MIN
9
NOT APPLICABLE
2
20 MIN
A
NOT APPLICABLE
3
30 MIN (DEFAULT)
B
NOT APPLICABLE
4
1 H
C
NOT APPLICABLE
5
2 H
D
NOT APPLICABLE
6
NOT APPLICABLE
E
NOT APPLICABLE
7
NOT APPLICABLE
F
NOT APPLICABLE
Downlink –Measurement Interval
VALUE
INTERVAL
VALUE
INTERVAL
0
NOT APPLICABLE
8
NOT APPLICABLE
1
10 MIN
9
NOT APPLICABLE
2
20 MIN
A
NOT APPLICABLE
3
30 MIN (DEFAULT)
B
NOT APPLICABLE
4
1 H
C
NOT APPLICABLE
5
2 H
D
NOT APPLICABLE
6
NOT APPLICABLE
E
NOT APPLICABLE
7
NOT APPLICABLE
F
NOT APPLICABLE
Downlink
•Conversion formulas
-PM2.5 delta threshold < value >( ug / m3 )
-PM10 delta threshold < value >( ug / m3 )
Downlink
•Default settings
-Message 0x 0303 0000 0000 0000
-Transmission interval 0x03 = 30 MIN
-Measurement interval 0x03 = 30 MIN
-PM2.5 delta threshold Not applicable
-PM10 delta threshold Not applicable
Downlink
•Example
-Message 0x 0301 1428 0000 0000
-Transmission interval 0x03 = 30 MIN
-Measurement interval 0x01 = 10 MIN
-PM2.5 delta threshold 0x14 = 20 ug / m3
-PM10 delta threshold 0x28 = 40 ug / m3
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