Teltonika EBD021 Calyx 4G Modem for Raspberry Pi 4 or 5

The mobile module designed for Raspberry Pi 4 and 5 adds reliable 4G connectivity (75 / 50 Mbps) to your project wherever Wi-Fi or Ethernet fails. With direct installation via the 40-pin GPIO header, you achieve absolutely clean integration without cable clutter and with the possibility of global backup connectivity. Two SMA antenna connectors enhance signal stability even in challenging conditions. The low profile allows for use in compact devices and offers a professional solution for IoT, smart metering, industrial applications, and Smart City installations.

Durable solution with smart management

The compact module is constructed for extreme environments thanks to a temperature range of -40 °C to +75 °C. Advanced control via GPIO allows the modem to be remotely restarted, awakened, or completely turned off, ensuring continuous availability even in hard-to-reach places. Integrated PCM audio support provides high-quality voice transmission with minimal latency, making it ideal for communication, monitoring, and system alerts. The robust construction minimizes the need for external modems and simplifies installation.

Efficient power supply and professional integration

Power and data communication occur via the modern USB-C or GPIO interface with support for 5 V / 3.3 V DC, providing maximum flexibility in device design. HAT+ construction ensures a clean fit on the Raspberry Pi, thereby significantly saving space inside cabinets or kiosks. For applications where availability of mobile data is required without compromise, the module offers professional and cost-effective system expansion with the potential for deployment in thousands of units. Ideal for developers, integrators, and manufacturers who want to get the most out of their Raspberry Pi.

Key features

• Mounting on Raspberry Pi 4 and 5 (connects directly via the 40-pin GPIO header)
• Temperature range: from -40 °C to +75 °C
• Power and data: connection via USB-C (USB 2.0) or GPIO
• GPIO management for remote modem control
• SIM: one slot for Nano SIM card
• PCM audio support
• Low profile and durable construction
• Adds 4G connectivity (Cat 4 + backup 3G/2G)

Package contents

• Device
• 40-pin GPIO header
• USB-C to USB-A cable
• Mounting kit