Tags Overview

Firstly, you should focus on correct tag configuration for given use-case. The following criteria are typically considered:

  • Maximum Number of Tags at one location area 
    The max. number of tags has physical limit as each Tag blink consume portion of channel time. Total channel utilization depends on tag refresh rate and selected RF profile. The lower refresh rate the more transmissions within second from each tag and thus less total number of available tags within the same vicinity. 

    (info) Please use Channel Utilization Calculator for details.

  • Battery lifetime
    It is mainly dependent on parameters refresh rate and sleep mode.

    (info) Please use our Tag Battery Lifetime Calculator for details.

    The tags have a different battery capacity depending on the type. Please check the table below:
Type of TagBattery Capacity
iMU560 mAh
Piccolino600 mAh, 1000 mAh (optional)
  • Sleep Mode
    There are several modes:
    • Disabled
    • Delayed sleep
    • Immediate sleep
    • Keep alive

  Please find more details here.

Practical Examples:

    • Warehousing: I want to track goods, which remain stationary for most of the time, but every now and then they are moved. For this, I need lower refresh rate 1 s – 5 s, which means that I can use more tags and battery lifetime will be higher. Delayed sleep and keep alive sleep modes are preferred for this application scenario. 
    • Logistics: I want to track forklifts, which means I will use a medium refresh rate 100 ms – 500 ms, that will drain the battery a bit faster and I will have less tags available at one place at one time, but I will have precise trajectories of the forklifts. I can use either disabled sleep mode or delayed sleep mode to prolong the battery lifetime or use tag with external power supply i.e from forklift's battery.
    • Sports: I need to track player in real time, which means I will need to use very fast rates, below 100 ms. The tags will need to be recharged more often and I will have very precise trajectories, plus there will be a limited number of them at one time. I can use sleep immediately, delayed sleep or disabled sleep mode. These will prolong the battery lifetime when the players are stationary.

Always make sure that tags and anchors have the same blink configuration. The default blink configuration of the tags is in the following table:

Refresh Rate

100 ms (Tag iMU)

1 s (Tag Piccolino)

RF ProfileRF4*

*Depends on the firmware version. Legacy firmware has RF3 as default.

Default settings might differ for customer's custom configuration request.

Tags reconfiguration is described in section Wireless Configuration and Calibration or in video guide.

Once the tags and anchors are set to the same blink configuration, go to RTLS Manager -> Tag Summary and check the List of Online Tags. All active tags should be listed there.

If you know that the tags will be placed in a potentially hazardous environment (very dusty, very humid environments), please use an IP 67 cover for them. An example of such covers on the photos below:

Sewio provides Tag/Housing customization for high volume projects.