---
title: Teltonika EBD021 4G Calyx Raspberry Pi HAT+
date: 2026-06-01T09:48:38Z
modified: 2026-06-01T16:56:54Z
permalink: "https://tech.co.za/product/teltonika-ebd021-4g-calyx-raspberry-pi-hat/"
type: product
status: publish
excerpt: The Teltonika CALYX EBD021 is an industrial 4G LTE cellular Pi HAT designed to add professional-grade mobile connectivity to Raspberry Pi 4 and Raspberry Pi 5 platforms.
wpid: 677672
product_brand:
  - Teltonika
product_type:
  - simple
product_cat:
  - Networking
featured_image: "https://tech.co.za/wp-content/uploads/2026/06/ebd021a.png"
featured_image_alt: teltonika ebd021 calyx 4g lte fdd (cat 4) embedded raspberry pi hat+, 2 x sma for mobile,
---

The **Teltonika CALYX EBD021** is an industrial **4G LTE cellular Pi HAT** designed to add professional-grade mobile connectivity to **Raspberry Pi 4 and Raspberry Pi 5** platforms.

Built around LTE Cat 4, EBD021 delivers dependable connectivity for **IoT gateways, edge computing, telemetry, automation, and industrial control**—ideal for deployments where reliability and coverage matter more than peak speeds.

**Key features:**

- 4G LTE Cat 4 with 3G/2G fallback
- Designed for Raspberry Pi 4 & Raspberry Pi 5
- Dual SMA connectors for external cellular antennas
- Nano SIM slot (4FF)
- Industrial temperature range for field deployments



| Model | [Teltonika CALYX](https://routerstore.com/product/teltonika-calyx-pi-hat-industrial-cellular-modem-router/) EBD021 – 4G LTE Pi Hat |
| --- | --- |
| Mobile Module | 4G LTE-FDD (Cat 4) – 75 Mbps DL / 50 Mbps UL; LTE-TDD (Cat 4) – 65 Mbps DL / 35 Mbps UL; DC-HSPA+ – 42 Mbps DL / 5.76 Mbps UL; 3G – 384 kbps DL / 384 kbps UL; 2G EDGE – 236.8 kbps DL / 236.8 kbps UL; 2G GPRS – 85.6 kbps DL / 85.6 kbps UL |
| 3GPP Release | Release 9 |
| USB Interface | USB 2.0 Type-C (receptacle), data rate up to USB 3.0 standard |
| 40-pin GPIO Header | **PWR\_KEY:** Modem on/off (Digital Input 0–3.3 V, active High pulse ≥ 500 ms) **Modem Wake-Up:** Exit sleep mode (Digital Input 0–3.3 V, active Low) **Modem Reset:** Reboot modem (Digital Input 0–3.3 V, active High) **PCM:** Digital audio interface (0–3.3 V logic) **SIM\_SELECT:** Switch between physical SIM and eSIM (0–3.3 V, High = eSIM) |
| SIM Interface | 1 × Nano SIM slot (4FF), push-pull mechanism |
| Antenna Interfaces | 2 × SMA female connectors for Mobile (Main + Diversity) |
| Status LEDs | 1 × Power / NET IND / NET STAT Indicators |
| Power Input | 5 V DC via USB-C or Raspberry Pi 40-pin header (5 V and 3.3 V lines) |
| Dimensions (W × H × D) | 56 × 23.11 × 95.48 mm |
| Weight | 57 g |
| Mounting Options | Includes mounting kit for secure installation with Raspberry Pi enclosure |
| Operating Temperature | −40 °C to +75 °C |
| Regulatory Approvals | CE, UKCA, EAC, UCRF, RCM, CB, WEEE |
| EMC Compliance | 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 |
| RF Compliance | 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 |
| Safety Standards | CE: EN IEC 62311:2020 / RCM: AS/NZS 62368.1:2022 / CB: EN IEC 62368-1:2020 + A11:2020 |
| Management & Monitoring | Compatible with Teltonika RMS for remote management, monitoring and firmware updates |
| Compatibility | Raspberry Pi 4 Model B and Raspberry Pi 5 (with standard HAT layout) |
| Typical Applications | CCTV & ANPR sites, environmental monitoring, SCADA nodes, POS failover WAN, smart cabinet control, pop-up connectivity points |