When the external probe is connected properly to the sensor, the sensor will operate “normally” once powered up. Normal
operation of the sensor is indicated by the left LED flashing either an “orange” or “green” color to indicate the connection status to
a network.
With the 1-Wire Digital Thermometer Probe, a connection problem at power up is indicated by both LEDs on the front panel being
constantly on. This is a visual indicator to the user that there is a communication issue between the sensor and the probe.
With RTD Temperature Probe firmware implementation being a little different the LED function is not currently enabled, however,
both sensors support the feature where the 'sensor fault' bit is set in the LoRa messages when disconnected.
For more information to check this bit, refer to the ‘RS1xx LoRa Protocol Application Note’ available under ‘Application Note’ tab in
the documentation section on the RS1xx product page.
In either case, if the sensor cannot detect the external probe it will not function properly.
To remedy this, follow these steps:
Retry the steps from the Installation section. Make sure the sensor has the latest firmware installed to ensure the sensor
has all the latest capabilities. The firmware can be updated using the mobile app. Reference the RS1xx operational guide
for more details, available on the RS1xx product page.
The time it takes for the sensor to detect a probe depends on the sensor’s settings, in particular, the read period and
aggregate count. This means that the time to auto detect a probe can fluctuate between 30 seconds or likely much longer.
To speed up the auto detect process of the sensor, press and hold the Bluetooth button on the top of the sensor for
five seconds after reconnecting the external probe. This will restart the sensor, and on startup the sensor will check for the
externally connected cable assembly.
If you continue to experience an issue, contact Laird Support. There could be damage to the Sentrius sensor or probe.
Figure 7: Front panel LEDs are lit
