Temperature Probe Accessory; Wire Accessory - UnaBiz UnaBell LTE-M User Manual

2.4.2.

Temperature Probe Accessory

When the temperature probe accessory is connected to UnaBell LTE-M, the embedded
button continues to operate in its mode and configurations. The temperature probe only
operates in event, timer or event + timer modes. For event modes, it sends an uplink
message containing the current temperature data when the button is pressed. For timer
modes, it sends a log of temperature data at an uplink frequency configured on the
UnaConnect platform.
An example scenario is that the temperature probe is connected to UnaBell LTE-M to
monitor the temperature of a meeting room. The timer mode sends temperature data at
predefined intervals for facility monitoring and if a user wishes to call the facility control to
change the air-condition setting, they can use the embedded button in event mode to send
a request message.
2.4.3.

2 Wire Accessory

When the 2 wire accessory is connected to UnaBell LTE-M, the same operation mode and
configurations for the embedded button is applied to the 2 wire external I/O connector, and
the recommended detection mode for the external I/O is edge detection.
An example scenario is that a 2 wire pressure sensor customized by the user is connected to
the UnaBell LTE-M to detect the state of a seat. The edge detection in occupancy mode
detects when the pressure is applied and sends an 'occupied' message, then ignores other
triggers from the sensor for a pre-defined period of time (occupancy duration), then checks
if the pressure is still being applied. If it has been removed, the sensor sends a 'vacant'
message to notify the user of the state change for the seat.
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