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Vehicle Devices | Hybrid | Mission Critical LTE

SCU3 Hybrid TETRA and LTE Vehicle Device

The SCU3 is a powerful, future-ready critical communications device that combines TETRA and LTE, providing users with mission-critical voice and high-speed data connectivity in a single unified solution.

The dual mode SCU3 enables organisations to operate hybrid communications fleets using existing TETRA hand-portable devices and begin the migration journey to mission-critical broadband.

A complete vehicle communications hub

Designed to be a hub for voice and data services, the SCU3 supports Bluetooth®, Wi-Fi and Ethernet to provide connections to a range of accessories and ancillary systems, such as in-vehicle infotainment systems, loudspeakers and camera feeds. Based on Android OS, it is also capable of running a wide range of applications, including Sepura's Mission Critical Push-To-Talk (MCPTT) app.

SCL3 TETRA and 4G/5G device

Introducing the SCL3, Sepura's first body-worn device providing both TETRA and 4G/5G in one flexible, mission-critical solution. Secure your migration strategy to mission-critical LTE with a hybrid fleet.

SCL3 body-worn device

SCL3 Bodyworn 2024
Diagram indicating highlights of SCU3

Robust, reliable design

Waterproof, corrosion-resistant aluminum die cast housing with rugged connectors and inputs .

USB 2.0

Integrate with standard peripherals


Wireless data connectivity or Hotspot device


Connect to wireless audio devices and peripherals

Gigabit Ethernet

Connect data devices within a vehicle

Mission critical LTE

LTE bearer supporting mission critical QoS Class Identifiers (QCIs) and fast data up to 300 Mbps

Dual display ports

Mirrored display connects to standard HDMI touchscreen devices

Cellular voice module

2G/3G/4G cellular voice capabilities in the same device

Optional TETRA Module

For narrowband mission critical services or device-to-device communication

Android OS

Open source operating system offering access to a wide number of applications


Vehicle audio, control and fixing accessories

Utilising as many of Sepura’s standard accessories as possible, which are designed for mission critical use, ensures frontline staff will always have the most reliable communications.

scalable user interface

Using standard HDMI displays and offering up to 720p HD video from the SCU3, the Android UI or MCX Application can utilise a multitude of screen sizes from 7 inch up to 65 inch. This offers a wide variety of use cases from the front of standard vehicle to mobile control rooms.


Designed for flexibility and use with multiple technologies, the SCU3 comes with Bluetooth®, Wi-Fi and Ethernet options to provide connection to a range of accessories and ancillary systems, creating a mission critical communications hub for now and in the future.


Built on the market-leading Android OS, the SCU3 provides compatibility with the widest possible range of applications available. Software familiar to users from smartphones will run seamlessly on the device, supporting operations with powerful data accessibility, supporting operations with actionable information.

Full Control of Data

The SCU3 is equipped with LTE data capabilities that allow applications such as real-time video to run in the field. The SCU3 seamlessly processes data intensive applications, either those installed on the device or from external devices tethered via Ethernet or Wi-Fi. The device allows complete control over how and where data traffic is routed, based on operational need.

Dedicated Platform Management

The SCU3 is managed via a dedicated Mobile Device Management solution, providing wireless programming capability delivered over a simple web browser. Software upgrades can be configured and delivered across the fleet when it suits the user organisation, increasing operational efficiency and effectiveness.

The full SCU3 technical specifications are available for download at the bottom of this page.




Power Supply

6-36V DC

Frequency Bands

LTE FDD: B1/B2/B3/B4/B5/B7/B8/B20/B28 (A+B)
LTE TDD: B38/B39/B40/B41
WCDMA: B1/B2/B4/B5/B8
GSM: 850/900/1800/1900MHz
TETRA: 380-473MHz

RF Performance

Class 4 (33dBm±2dB) for GSM850
Class 4 (33dBm±2dB) for EGSM900
Class 1 (30dBm±2dB) for DCS1800
Class 1 (30dBm±2dB) for PCS1900
Class E2 (27dBm±3dB) for GSM850 8-PSK
Class E2 (27dBm±3dB) for EGSM900 8-PSK
Class 3 (23dBm±2dB) for LTE-FDD bands
Class 3 (23dBm±2dB) for LTE-TDD bands
Class 3 for TETRA

SIM Card

2 x micro-SIM card (Dual standby)
1 x Mini SIM for TETRA
SIM Application Toolkit (3GPP TS 31.111)

Bluetooth ®

BT2.1+EDR/3.0/4.1 LE/4.2 BLE/BT5.0

Operating System

Android 10.0

Standard Connectivity

2 x RJ45 Gbps Ethernet ports
2 x USB Type A 2.0 ports
1 x DB9 RS-232 port
2 x DVI Console ports (Mirrored)
1 x DB15 Power and I/O port
2 x SMA connectors for MIMO-Wi-Fi/BT
2 x SMA connectors for MIMO-LTE
1 x SMA connector for GNSS
1 x SMA connector for TETRA

Output Resolutions

1280x720 (16:9)
1280x800 (16:10)
1024x768 (4:3)

Product Options

Second LTE module
TETRA module providing Voice and Data services in DMO

Environmental Protection

Dust and water protection to IEC 60529 IP54
ETSI EN 300 019-2-5 drop, vibration and humidity
Storage temperature -40°C to +85°C
Operating temperature -20°C to +60°C

Accessories compatible with SCU3