NINA-B2 series (u-connect)
Stand-alone dual-mode Bluetooth modules
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OBS421 series
Stand-alone dual-mode Bluetooth modules
OBS421 series is an older generation product. For new designs see:
Stand-alone Bluetooth 5.0 low energy modules with NFC
Stand-alone dual-mode Bluetooth modules
Proven dual-mode Bluetooth modules with best performance and multi-point functionality
- Bluetooth v4.0 with Bluetooth low energy and Bluetooth BR/EDR (dual-mode Bluetooth)
- Embedded stack (SPP, DUN, PAN, GATT)
- Low Emission Mode® limits interference with other 2.4GHz RF
- u-blox Low Energy Serial Port Service
- High throughput of 1.3 Mbps
- Advanced multipoint capability with 7 slaves
Standard
Professional
Automotive
Product variants
CB-OBS421i-24
Internal antenna
CB-OBS421x-24
U.FL antenna connector
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Product Selection
Documentation & resources
| Product variants | CB-OBS421i-24 | CB-OBS421x-24 |
|---|---|---|
| Global | ✓ | |
| Bluetooth profiles and services | Bluetooth SPP, Bluetooth DUN, Bluetooth PAN, Bluetooth GATT, u-blox low energy serial port service | |
| Operation mode | Standalone module open CPU | |
| UART | 1 | |
| GPIO | 9 | |
| Maximum supply [V] | 6 | |
| Minimum supply [V] | 3 | |
| Maximum temperature [°C] | 85 | |
| Minimum temperature [°C] | -30 | |
| AT command support | ✓ | |
| Extended data mode protocol | ✓ | |
| Antennas | Internal antenna | Connector (active) for external antenna |
| Dimensions [mm] | 36 x 16 x 2.6 | |
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