Teltonika CALYX Embedded Raspberry Pi HAT+ for Reliable Cellular Connectivity
The Teltonika CALYX Embedded Raspberry Pi HAT+ is engineered to deliver dependable mobile internet connectivity for Raspberry Pi 4 and Raspberry Pi 5 environments where traditional wired or wireless networking is limited or unavailable. Designed for developers, integrators, and industrial IoT deployments, this compact solution provides stable 4G LTE connectivity directly through your single-board computer setup while maintaining a clean and space-saving installation.
Its direct-mount HAT+ design integrates neatly onto the Raspberry Pi platform, eliminating unnecessary clutter and simplifying deployment in embedded systems. With GPIO modem control support, users can efficiently manage modem operations such as wake, reset, and control functions directly through Raspberry Pi pins. PCM audio functionality also enables low-latency audio communication for applications requiring streamlined voice or audio transmission.
The Teltonika EBD021 CALYX Embedded Raspberry Pi HAT+ is a compact cellular connectivity module built for Raspberry Pi 4 and 5 platforms. Featuring 4G LTE Cat 4 technology, dual SMA antenna connectors, GPIO modem management, and PCM audio support, this solution enables reliable mobile networking for industrial automation, remote monitoring, IoT deployments, edge computing, and embedded development projects. Its space-efficient design and direct Raspberry Pi integration make it ideal for professional embedded applications requiring stable internet access beyond traditional Wi-Fi or Ethernet coverage.
Built for Embedded and IoT Applications
Whether deployed in industrial automation, telemetry, smart devices, or remote monitoring systems, CALYX provides dependable mobile broadband access without requiring external USB modems or bulky networking equipment. The compact footprint makes it especially suitable for installations where space efficiency matters.
This model supports LTE-FDD Cat 4 connectivity, offering practical mobile internet performance for data-intensive embedded workloads and field deployments.
Connectivity and Integration Advantages
The CALYX HAT+ has been designed for streamlined integration into Raspberry Pi environments while maintaining flexible connectivity options.
Key integration benefits include:
Technical Details
Important hardware details for the Teltonika EBD021 include:
Designed for Flexible Cellular Expansion
The CALYX platform is available across multiple connectivity variants, allowing developers and system integrators to select the right performance level for their deployment requirements. The EBD021 model focuses on practical and efficient 4G LTE Cat 4 connectivity while maintaining low-profile embedded integration.
For applications operating in remote locations, transport systems, industrial control environments, or smart infrastructure projects, the Teltonika CALYX solution offers a reliable way to maintain mobile connectivity where Ethernet and Wi-Fi cannot consistently perform.
Why Choose the Teltonika EBD021 CALYX
The Teltonika EBD021 combines reliable LTE performance, Raspberry Pi compatibility, and embedded-friendly design into a single compact solution. Its combination of GPIO modem control, external antenna support, and integrated cellular connectivity makes it a strong choice for professional IoT and embedded networking deployments requiring stable mobile internet access.
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Specifications | |
| Product Code | EBD021 |
| Mobile | |
| Mobile module | Calyx 4G / EBD021 |
| 4G LTE-FDD (Cat 4) - 75Mbps DL, 50Mbps UL , LTE-TDD (Cat 4) - 65Mbps DL, 35Mbps UL , DC-HSPA+ - 42Mbps DL, 5.76Mbps UL , 3G - 384 kbps DL, 384 kbps UL, 2G - 236.8 kbps DL, 236.8 kbps UL, 2G GPRS - 85.6 kbps DL, 85.6 kbps UL | |
| 3GPP Release | Release 9 |
| Mobile module | Calyx 5G / EBD050 |
| 5G Sub-6Ghz SA/NSA 2.4/3.4Gbps DL (4x4 MIMO), 900/550 Mbps UL (2x2) , 4G LTE Cat 19 up to 1.6 Gbps DL/ 200 Mbps UL , 3G up to 42 DL/ 5.76 UL Mbps | |
| 3GPP Release | Release 16 |
| Mobile module | Calyx 5G Red Cap / EBD070 |
| 5G Sub-6Ghz SA 223 Mbps DL/123 Mbps UL , 4G LTE (Cat 4) up to 195 Mbps DL/105 Mbps UL | |
| 3GPP Release | Release 17 |
| USB | |
| Data rate | USB 2.0 - Calyx 4G / EBD021 , Calyx 5G Red Cap / EBD070 |
| USB 3.0 - Calyx 5G / EBD050 | |
| 40-pin GPIO header | |
| PWR_KEY | Modem turn on/off. Digital Input, 0 - 3.3 V logic level, active High, to activate use pulse (≥500 ms) |
| Modem wakeup | Wake up modem from a sleep mode. |
| Digital Input, 0 - 3.3 V logic level, active High - Calyx 4G / EBD021 | |
| Digital Input, 0 - 3.3 V logic level, active Low - Calyx 5G / EBD050 , Calyx 5G Red Cap / EBD070 | |
| Modem reset | Resets the modem. Digital Input, 0 - 3.3 V logic level, active High |
| Power | |
| USB type C | 5 VDC |
| 40-pin GPIO header | On a 40-pin header, 5 VDC and 3.3 VDC |
| Physical Interfaces | |
| Status LEDs | 1 x Power, NET IND, NET STAT |
| SIM | 1 x SIM slot (Nano SIM - 4FF), push-pull |
| Power | On a 40-pin header/USB power |
| USB | USB Type-C receptacle |
| Antennas | Calyx 4G / EBD021 , Calyx 5G Red Cap / EBD070 |
| 2 x SMA for Mobile | |
| Antennas | Calyx 5G / EBD050 |
| 4 x SMA for Mobile | |
| Physical Specification | |
| Weight | 57 g |
| Mounting options | WIth included mounting kit |
| Dimensions (W x H x D) | Calyx 4G / EBD021 , Calyx 5G Red Cap / EBD070 |
| 56 x 23.11 x 95.48 mm | |
| Dimensions (W x H x D) | Calyx 5G / EBD050 |
| 56 x 23.11 x 100.8 mm | |
| Operating Environment | |
| Operating temperature | -40 degreesC to 75 degreesC |
| Regulatory & Type Approvals | |
| Regulatory | Calyx 4G / EBD021 , Calyx 5G / EBD050 |
| CE, UKCA, EAC, UCRF, RCM, CB, WEEE | |
| Regulatory | Calyx 5G Red Cap / EBD070 |
| CE, UKCA, EAC, UCRF, FCC, ISED (IC), RCM, CB, WEEE | |
| EMC Emissions & Immunity | |
| Standards | Calyx 4G / EBD021 |
| EN 55032:2015+ A11:2020 + A1:2020 | |
| EN 55035:2017+A11:2020 | |
| EN 61000-3-3:2013+A1:2019+A2:2021 | |
| EN IEC 61000-3-2:2019+A1:2021+A2:2024 | |
| EN 301 489-1 V2.2.3 | |
| EN 301 489-17 V3.3.1 | |
| EN 301 489-52 V1.2.1 | |
| Standards | Calyx 5G / EBD050 |
| EN 55032:2015+ A11:2020 + A1:2020 | |
| EN 55035:2017+A11:2020 | |
| EN 61000-3-3:2013+A1:2019+A2:2021 | |
| EN IEC 61000-3-2:2019+A1:2021+A2:2024 | |
| EN 301 489-1 V2.2.3 | |
| EN 301 489-3 V2.3.2 | |
| EN 301 489-17 V3.3.1 | |
| EN 301 489-19 V2.2.1 | |
| EN 301 489-52 V1.2.1 | |
| Standards | Calyx 5G Red Cap / EBD070 |
| EN 55032:2015+ A11:2020 + A1:2020 | |
| EN 55035:2017+A11:2020 | |
| EN 61000-3-3:2013+A1:2019+A2:2021 | |
| EN IEC 61000-3-2:2019+A1:2021+A2:2024 | |
| EN 301 489-1 V2.2.3 | |
| EN 301 489-17 V3.3.1 | |
| EN 301 489-19 V2.2.1 | |
| EN 301 489-52 V1.2.1 | |
| 47 CFR Part 15, Subpart B | |
| RF | |
| Standards | Calyx 4G / EBD021 , Calyx 5G / EBD050 |
| EN 301 908-1 V15.2.1 | |
| EN 301 908-2 V13.1.1 | |
| EN 301 908-13 V13.2.1 | |
| EN 301 908-25 V15.1.1 | |
| Standards | Calyx 5G Red Cap / EBD070 |
| EN 301 908-1 V15.2.1 | |
| EN 301 908-13 V13.2.1 | |
| EN 301 908-25 V15.1.1 | |
| Safety | |
| Standards | CE: EN IEC 62311:2020 |
| RCM: AS/NZS 62368.1:2022 | |
| CB: EN IEC 62368-1:2020+A11:2020 | |
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