https://www.lairdconnect.com/iot-devices/iot-
sensors/sentrius-bt7x0-tracker-multi-sensor
6
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The
Sentrius™ BT710 is shipped with the battery installed and operating in a low power state called
Shipment Mode
.
When it arrives from the factory, the tracer is in shipment mode. To wake the device, press and hold the pushbutton for five
seconds until the alarm LEDs turn on and a speaker tone is emitted along with the status LED lighting green and a brief vibration
for devices equipped with that feature (startup sequence). This puts the tracer into
Active Mode
. The tracer blinks the status
LED yellow waiting for its internal clock to be set, either by the BT710 mobile app or a nearby gateway. If a gateway is not
available, connect the mobile app to automatically set the internal clock. Once in active mode with its clock set, the BT710 scans
for compatible nearby tracers and transmits BLE advertisements for other tracers to sense.
In active mode, the BT710 tracer can be configured using the associated Laird Connectivity BT710 mobile application. The
default configuration sets the tracer to periodically scan for and log other tracers. Additional parameters include BLE advertising
interval, RSSI sensing/proximity thresholds, proximity alarm timers, and alarm indicator styles.
There are two low power modes:
Non-Active
and
Power-Save
. The tracer automatically enters these modes based on motion
detection to extend battery life. User-configurable parameters control timing for this feature. Separate BLE scanning parameters
can be set for each operating mode to scan less frequently in Non-Active mode and Power-Save mode. The timeouts for entry
into the low power modes is also adjustable on the settings tab of the app.
Figure 2 - Operating modes of the BT710 tracer
Press and hold the pushbutton for three seconds to perform a battery check. The BT710 lights up a number of its red alarm
LEDs to indicate approximate voltage level of the battery.
4 LEDs on: 75-100% battery life remaining
3 LEDs on: 50-75% battery life remaining
2 LEDs on: 25-50% battery life remaining
1 LED on: 0-25% battery life remaining
When the BT710 senses a battery below the low battery threshold parameter, it blinks the status LED quickly 3 times red at
each scan interval. A small beep sequence is also emitted occasionally as a reminder to change the battery.
If the button is held for more than 10 seconds, the status LED begins to rapidly blink yellow. Releasing the button performs a
factory reset. A factory reset erases all logs and resets all parameters to defaults. The BT710 goes through a reset cycle when
finished and emits the startup sequence LED pattern and beeps, followed by entry into active mode.
The battery is a 3-volt lithium of CR2477 type.
Note:
The battery door cover is underneath the clasp on the backside of the tracker. A coin may be used to aid in removal.
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