Omron F3SG-SRB Series User Manual page 266

Setting with SD Manager 3
 If the device is not connected
If the device is not connected, no dialog message is displayed.
In addition, a pop-up message saying "Not connected with the sensor" is displayed when tapping each
icon.
If pairing is has not been done yet, refer to 4-5-3. Pairing (Connection Verification).
If unable to connect with the sensor although pairing is already completed, confirm again that the Bluetooth
communication function of the smartphone or tablet is ON.
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User's Manual
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