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BeMini (B3-MIOT-NA) Rechargeable Device

BeMini is the newest addition to BeWhere's asset tracker family. Discover endless tracking possibilities with our new BeMini, about 1/4 the size of our current devices.

Rechargeable via micro-USB, the BeMini features sensors such as motion, temperature, and light, along with Wi-Fi indoor location. Its small and lightweight design can be used in compact spaces or where a discreet tracker is a better fit. It opens up potential use cases for tracking a broader array of assets, both smaller ones and those requiring indoor and outdoor location.

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Features and Benefits

  • Key features

    • Available on the following Radio Access Technologies: B3-MIOT-NA (M1 / NB1/ NB2)​
    • Rechargeable with micro-USB (included)​
    • Configurable alerting​
    • Motion tracking, triggering updates​
    • Outdoor Location: GNSS (GPS, BeiDou, Galileo, GLONASS and QZSS)​
    • Indoor Location: Wi-Fi / BLE 5.2​
    • IP67 Rugged and Dust / Water-proof enclosure​
    • On-board sensors​
      • Temperature​
      • Humidity​
      • Pressure​
      • Light​
      • Accelerometer​
      • Buzzer​

  • Benefits

    • Ultra-low power platform​
    • Low device cost ​
    • Low deployment cost ​
    • No reader needed​
    • Full coverage (deep indoor and rural areas)​
    • Support for a massive number of devices

Technical Specifications​

General
Communication LTE CAT M1 / CAT NB1/NB2
Battery Built-in rechargeable battery (Lithium-Polymer, 830mAh). Rechargeable via Micro-USB cable.
Operating Voltage: 3.35 – 4.35V±0.02V
Charge: 0℃~ +45℃ In-use: -30℃~ +60℃
Power The BeMini can be fully charged from 3.35V to 4.435 in 1.5 - 2 hours using an external USB power source and a standard 1A power adapter (maximum input current: 380 mA).
Standard Power Adapter: 6VDC – 100VDC; max input current 190mA @12VDC
BCU Smart Adapter: V+ 6VDC – 100VDC, max input current 190mA @12VDC
Data LTE CAT M1 Packet Data (CoAP/UDP) / CAT NB1/NB2 Packet Data CoAP/LwM2M/UDP
Operating Bands North America & Europe: Cat M1 /NB1/NB2
M1: LTE-FDD: B2/B3/B4/B5/B8/B12/B20/B28
NB1/NB2: LTE-FDD: B2/B3/B4/B5/B8/B12/B20
SIM (BeWhere) MFF2 (embedded SIM)
Location
GPS Receiver Gen9 VT of Qualcomm (GPS, GLONASS, BeiDou, Galileo, and QZSS).
Tracking & Navigation: –157 dBm Cold start: –146 dBm Hot start: –157 dBm
Accuracy: Position accuracy <3 m CEP-50
Wi-Fi Receiver For Micro-location purpose only.
Frequency: 2.4 GHz to 2.4835 GHz, Sensitivity: -70 dBm
Sensors
Sensor Temperature: [-30, +70]; Absolute accuracy ±0.5 °C
Humidity: Absolute accuracy ±3 %RH
Pressure: [300...1100 hPa], Absolute accuracy ±1 hPa
3-Axis Accelerometer Motion, Rotation
Light Tamper
Environmental Storage Temperature: -40 °C to +60 °C
Operating Temperature: -20 to +70℃ (batteries, extended 70℃-80℃ for max 4 hrs)
Humidity: 95% R.H. @ 50℃ non-condensing
SAE J1455: Powered Thermal Cycle, Temperature Shock Resistance, Humidity-Temperature Cycle
Physical Dimensions: 57 x 36 x 20 mm (2.24 x 1.4 x 0.79 inches)
Weight: 0.1 lb (50 gr)
Compliance FCC, ISED, PTCRB, CE
USA: AT&T, FirstNet, T-Mobile
Canada: Bell

Standard Power Adapter​

BeWhere has developed a Standard Power Adapter for the BeMini device as an external power cable designed to supply continuous DC power to recharge the internal battery. It accepts a wide input voltage range of 6VDC to 100VDC and provides up to 190mA at 12VDC. The pigtail leads are color-coded for easy installation: RED is Positive and BLACK is Negative/GND. The cable length includes a 36-inch (91.5 cm) lead to the power block and a 12-inch (30.5 cm) lead from the block to the BeMini connector, ensuring flexibility for mounting in different environments. This adapter is specifically designed to integrate with the BeMini’s power port and is the recommended method for supplying stable external power to the device.

  • Electrical Specifications:

    • 6VDC – 100VDC
    • 190mA max @12VDC

  • Pigtail Ends

    • RED : Positive
    • BLACK : Negative/ GND

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BCU Smart Adapter​

BeWhere also has developed a BCU Smart Adapter, designed for EV bike installations, to power and interface with the BeMini/BCU communication module. It uses a JST connector that provides wide-range DC input power (Red wire: 6VDC–100VDC, up to 190mA @12VDC) and a shared Black Ground. In addition to power, the adapter carries a full 3.3V UART data interface, with Green (Rx) and White (Tx) lines enabling two-way communication with the bike’s controller. The adapter communicates using a CDC modem profile at 115200 baud, 8 data bits, no flow control, no parity, and 1 stop bit. Cable lengths include a 6-inch (15 cm) lead from the JST side and a 3.5-inch (9 cm) lead to the Micro-USB male connector, allowing flexible placement within EV bike wiring harnesses. This adapter is the required interface for delivering power and serial data between an EV bike system and the BeMini/BCU Smart Module.

  • Electrical Specifications JST Connector :

    • Red : V+ 6VDC – 100VDC , 190mA max @12VDC
    • Black : Common Ground -0V
    • Green : Cable 3.3V UART Rx
    • White : Cable 3.3V UART Tx

  • UART Communications : CDC modem , Baud rate 115200, 8 Bit, no Flow Control, No parity, Stop Bit 1

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