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For the Sentinare 2 sensor, the reset process only takes about one minute, during which the sensor’s
LED will change to flashing green, flashing white, red, solid white (rebooting), and finally flashing white,
signaling that it is ready to be added to an account. Please do NOT unplug its power until the sensor is
fully reset after one minute, and the LED becomes flashing white light again. Different from the Cypress
sensor, factory reset does not change the firmware version of Sentinare 2, so it does not need to be
upgraded, unless a new firmware version is available, but the sensor will be removed from the account.
It can then be added to any account.
2) Physical Factory Reset
If the App cannot be connected to the sensor via Bluetooth, a physical factory reset is needed.
For the Cypress sensor, in the back of the sensor, there is a reset hole next to the SD card slot, as shown
below. To perform the physical factory reset, insert a pin into the hole (from lower left to upper right
direction, or 45 degree), gently press the reset button inside the sensor, and hold it for about 8 seconds,
until the LED light becomes purple. After that, the sensor will reboot, and the LED will become solid
white for about a minute, and will then become flashing white, signaling that it is ready to receive
command from the App. Some firmware versions might need multiple reboots during the factory reset.
For Sentinare 2 sensor, the reset button at the top of the sensor is needed to perform the physical
factory reset. The procedure is as follows:
1. Unplug the power of the sensor
2. Plug in the power of the sensor
3. After the LED light becomes white, press the reset button within 3 seconds, the LED will become
red immediately, then release the button
After these steps, the sensor will reboot. The LED will first become solid white, and then turn into
flashing white, signaling that the sensor is ready to receive command from the App.
3) Switching to Previous Firmware Version (Sentinare 2 sensor only)
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