B4n and B3 Personnel Tags

This guide covers the main functions and features of the B4n and B3 personnel tags. 


  • This user guide covers both the B4n and B3 tags because, with the exception of messaging, they operate the same. The B3 tag has no display to view or send messages.
  • If you'd like to view or download a PDF version of the B4n and B3 Personnel Tags - User Guide, click the link at the bottom of this article.

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Use Cases

The B4n and B3 devices, also known as the badge tags, offers wearers safety and tracking, using either Wi-Fi or BLE network infrastructure. The tags are widely used in fields such as medical/health, schools, mining, and hotel and hospitality—where personal safety and location tracking are essential. The B4n tag’s display enables instant communications for vital messages. The safety pull switch on either tag sends an immediate distress signal to enable alert responses.

Physical Description

  • Tag Dimensions: 2.36 x 3.54 x 0.33 in / 60 x 90 x 8.5 mm
  • Weight: 1.7 oz / 46 g
  • Operating Temperature: 32 to 122 °F / 0 to 50 °C
  • Storage Temperature: -40 to 140 °F / -40 to 60 °C
  • Humidity: 95 % non-condensing, relative humidity
  • Protection: Splash-proof ultrasonically welded enclosure with open connector
  •  Presentation: Worn on lanyard or belt clip attached to the safety pull switch
  • Charging: 2-hours charge time via the charging port with a USB B4 charging cable or in a B4 gang-charger that charges up to 10 tags at the same time. Depending on the location and update frequency, the charge may last three days or longer.
  • Cleaning: Clean and sterilize with CaviCide Solution or wipes. (Long term use of Virex TB can damage the tag enclosure and is not recommended.)


For detailed specifications, see the datasheets for the B4n and B3 Wi-Fi / BLE tags.


  • FCC: Part 15 (US and Canada)
  • FCC ID TA7-B400
  • CE Mark (European Union)
  • Medical SAR: The SAR MPE limit for 2.4GHz is 1.0mW/cm2. SAR levels should be less than 1.2 W/kg. This equipment complies with FCC Radio Frequency Electromagnetic Signal (RF) exposure limits set forth for an uncontrolled environment of portable transmission. This product has been evaluated for RF exposure at a distance of 0.3 inches (9 mm) from device antenna to body. Operation at a separation distance less than 0.3 inches (9 mm) from the radiating element to nearby persons will expose nearby persons to RF levels that exceed the FCC rules for RF exposure.
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