This tutorial focuses on the configuration of high and low alarms for temperature, humidity, VOC, CO², current/voltage and delta pressure values for the Temp/Temp2S (ARF8181/8180) sensors, Delta P (ARF8283), Analog/Analog power (ARF8190/8200), Comfort (ARF8275), Serenity (ARF8373) and Breath (ARF8377) in LoRaWan and SIGFOX via IoT Configurator.
All of the above products allow threshold exceedance detection (high and low) for their various measured elements.
The products send a data frame when a threshold is exceeded, but also when the system returns to normal.
Example for the high and low temperature thresholds :
In this example I'm using a Comfort, but the alarm configuration principle is the same for all sensors
The initial configuration is the default plus the alarm parameters below.
- Alarm type (register S330) = Low and high thresholds
- High threshold value (register S331) = 300
- High threshold hysteresis (register S332) = 50
- Low threshold value (register S333) = 150
- Low threshold hysteresis (register S334) = 50
The product will send a 0x4D alarm frame if the temperature exceeds the low threshold of 15° or the high threshold of 30°.
It will then send a 0x4D alarm frame when the value is measured below the alarm threshold (taking hysteresis into account) to indicate that the alarm is deactivated.
Periodic mode and alarm mode can be combined.
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