ATM'O senso


The Atm'o sensor is a LoRaWAN class A senso that uses a disposable 3.6V C-type battery as power supply.

It measures the temperature, the relative humidity and the atmospheric pressure. It is possible to get the voltage of the power supply.


Family code / Release Note

The family code of Atm'o device is: 50-70-099-xxx

Release note:

  • 50-70-099-001: new case with new support

LoraWAN release

v1.0.2 Region Parameter rev B

User guide


Installation and operation

Radio propagation

In order for the sensor to operate correctly, the number of obstacles should be limited in order to avoid excessive radio wave attenuation. It is also important to place the sensor as high as possible.


The information in the table below represents how long the battery can last. It is based on the default configuration at ambient temperature (+25°C) within the optimal operating range of the sensor via a LoRaWAN network (one uplink frame), when the spreading factor used is SF12.

The disposable battery has a 2.6Ah capacity, of which 85% is used.

Transmission and Measure periodicitySpreading FactorBattery life
15 min / 15 min125 years
1 hour / 30 min128 years

Human Machine Interface

The Atm’O sensor has a buzzer that allows it to “communicate” with the user.

A reed switch is available under the sticker. It is possible to use a magnet to activate it and makes specific actions on the sensor (Switch off, switch on, Re-associtation…). When the reed switch is activated, the buzzer rings quickly.


To Start-up the device, it is necessary to put a magnet on the  side of the sensor during one second (at the left side of the cable gland). The buzzer rings quickly during this step. After this second, the buzzer stops and rings slowly until the association is done.

To switch off the device, use the same way by putting the magnet during 5 seconds. After this amount of time, the device rings 5 times slowly.

The table below describes the actions to be performed on the reed switch to disable or enable the storage mode.

Switch ON
(disable storage mode)
1 second
Switch OFF
(enable storage mode)
5 seconds

When the sensor is trying to associate with a network, it emits the following sound:

Once the association is completed, the buzzer makes the following sound:

A reed switch (or magnetic switch) is available. A magnet can be used to activate it and perform specific actions on the sensor (switch off, switch on, reassociation…).

  • Configuration: "void" frames are sent every minute for 10 minutes.

Standard reports are disabled in this mode.

Configuration mode
Way to trigger itOne passage of the magnet near the reed switch or specific ZCL command
Way to stop it Another passage of the magnet or specific ZCL command
Effects on the sensor
DurationThe configuration mode lasts 10 minutes
  • A reassociation procedure can be requested if no downlink frame is received by the sensor during a given periodicity (4 days by default) or if a given number (100 by default) is reached or in case of failure (no acknowledgement received) by sending an applicative frame to the sensor or via the sensor’s IHM.

The sensor keeps the AppEUi and DevAddr configured, Confirmed/Unconfirmed configuration and all applicative configurations. However, LoRaWAN configurations (channel, data rate…) are lost

ReAssociation Mode
Way to trigger itThree passages of the magnet near the reed switch or ZCL command from LoRaWAN cluster.
Effects on the sensor
  • A factory reset is available on Watteco’s sensors. It deletes all the applicative settings saved in the flash memory (i.e. configured batches and reports will be deleted).

The sensor keeps the AppEUi and DevAddr configured. However, LoRaWAN configurations (channel, data rate…) and applicative configurations are lost.

Factory reset
Way to trigger itTwo quick passages and a very long passage (until the sensor rings for the reset) of the magnet near the reed switch
Effects on the sensor

Applicative layer

Codecs are available to decode frames: Downloads

or Online codec

The Atm'o device integrates the following clusters:

ClusterCluster nameManaged attributes
Threshold is available
0x0402Temperature MeasurementAll
Threshold is available
0x0405Relative Humidity MeasurementsAll
Threshold is available
Threshold is available

The binary input is available and connect to the opening of the casing.

Default configuration

A default configuration is set:

  • The device reports a "batch" of temperature / humidity / pressure from every 15 minutes with a measure all 15 minutes.

The configuration of batch is :

Features Label (size= 3) Measure periodicity Transmission periodicity resolution
Temperature 0 15 minutes 15 minutes 0.01°C
Relative Humidity 1 15 minutes 15 minutes 0.01%
Pressure 2 15 minutes 15 minutes 1hPa
Battery Voltage 5 10 minutes and save each 100mV variation 7 days 1mV


Every change made to the default configuration must comply with the legal duty cycle (for example, the most restrictive in the EU is 0.1%, which corresponds to approximately 1 frame per hour with SF12)

To decode the default "batch" is necessary to use this argument: 3 0,1,7 1,1,6 2,1,7 3,1,10 4,1,10 5,1,6 .

Measurement periodicity

The measurement periodicity depends on the minimum and maximum recording intervals, and the delta.

If the value of the minimum and the delta is 0, then the maximum value is the periodicity. However, if the minimum is 0 and the value of delta is different than 0, then the periodicity is 1 second.

If the value of the minimum is different than 0, then this value is the same as the periodicity.

Frame examples

All frames have to be sent on port 125


Report of a batch

→ Applicative payload is: 56000000019304D0EC1328B41FA0DF1E000000807B0000008005

    "batch_counter": 0,
    "batch_relative_timestamp": 551,
    "batch_absolute_timestamp": "2020-11-19T15:35:47.146",
    "dataset": [
            "data_relative_timestamp": 550,
            "data": {
                "value": 2464,
                "label": 0,
                "label_name": "Temperature"
            "data_absolute_timestamp": "2020-11-19T15:35:46.146Z"
            "data_relative_timestamp": 550,
            "data": {
                "value": 2324,
                "label": 1,
                "label_name": "RelativeHumidity"
            "data_absolute_timestamp": "2020-11-19T15:35:46.146Z"
            "data_relative_timestamp": 550,
            "data": {
                "value": 1012,
                "label": 2,
                "label_name": "Pressure"
            "data_absolute_timestamp": "2020-11-19T15:35:46.146Z"
            "data_relative_timestamp": 550,
            "data": {
                "value": 0,
                "label": 3,
                "label_name": "Index1"
            "data_absolute_timestamp": "2020-11-19T15:35:46.146Z"
            "data_relative_timestamp": 550,
            "data": {
                "value": 0,
                "label": 4,
                "label_name": "Index2"
            "data_absolute_timestamp": "2020-11-19T15:35:46.146Z"



Modify report on the temperature

Modify the periodicity of measure to 5 minutes and sending all 5 minutes of temperature.

  • Go to,
  • Choose Sensor Frame Encoder,
  • Select the Atmo product,
  • Select Temperature - Configure reporting,
  • Select Batch in Report Type,
  • Set the Minimum Reporting Interval to 5 minutes ,
  • Set the Maximum Reporting Interval to 5 minutes,
  • Set the Delta to 0 to record all measure.

The frame is : 1106040215000000800580050000000103

→Response: 11 07 04 02 00 00 00 00

To disable the previous configuration, change the value of the minimum and maximum sending intervals and the delta to 0


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