User's Guide

1. Press and hold the Blue button until Right LED flashes orange. If the tag is busy this may take
even 20 seconds.
2. Then immediately release the Blue button button and press down the Red button .
3. After approximately 2 seconds both LED’s flash orange. If the tag is busy, it may flash only
the Right LED.
4. The tag has now been reset to factory settings. The tag is in reset mode when it does not
execute button scan as defined in section Button Activated Location Update and Maintenance
Call on page 21 and pressing the Menu button does not turn on the display.
Note
Resetting the tag to factory settings removes all messages from its memory!
4.7 Firmware Update
The tag firmware can be updated wirelessly using ERC. The firmware is uploaded to the tags from
the Tag Properties page or directly from Tags page in ERC. Follow instruction in the ERC User
Guide for updating the firmware.
Note
If the Tag battery level is below 50% - or below 10% when in charging - the FW update is not
allowed. The corresponding error code in ERC is TU. To update the firmware, please first
recharge the battery and try again.
4.8 Optimizing Battery Life
The B4 Wi-Fi tag uses an ultra-low power system-on-chip architecture that lowers the power
consumption to minimal, but to ensure optimal performance with targeted lifetime, here are some
considerations.
The principal in optimizing battery life is to determine the maximum interval for location updates,
still sufficient for the use case, to minimize the amount of time the tag is active.
Recommendations for optimizing battery lifetime:
● Scan only channels that are in use in your network. Typically, because of overlap of channels,
there are only 3 or 4 channels in use from the 11 (or 13/14) available.
● Use single SSID whenever possible. Using multiple SSIDs requires additional network scans
and decreases battery lifetime.
● When using dynamic IP addressing tune the DHCP server to provide very long lease times
for tags.
● The tag supports roaming between subnetworks. This feature renews tag’s IP address
whenever the access point association changes. Since renewing IP addresses consumes
large amounts of energy, it is strongly recommended not to use the network wide dynamic
addressing feature if it is not needed.
● Tune the wake up settings to match your application needs. More frequent updates lower the
battery lifetime.
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Chapter 4. Tag Operation