Motorola MOTOTRBO™ R7Ex ATEX IIC UHF Full Keypad Two-Way Radio 400–470 MHz 2W (MDH57QCN9RA3AN)

Product Overview

The Motorola MOTOTRBO™ R7Ex ATEX IIC UHF Full Keypad Two-Way Radio (MDH57QCN9RA3AN) is an advanced intrinsically safe digital radio engineered for communication in the most hazardous and explosive environments. Certified to ATEX and IECEx standards for IIC gas groups, this model is suitable for high-risk areas such as hydrogen and acetylene environments, where maximum safety compliance is essential.

Operating within the 400–470 MHz UHF frequency range, the Motorola R7Ex delivers clear and reliable communication in complex industrial and indoor environments. With a full keypad and high-resolution display, the radio supports messaging, system navigation and enhanced operational control, making it ideal for both safety-critical and day-to-day communications.

Key Features

• ATEX & IECEx IIC Certified: Approved for the most hazardous explosive gas environments (Zone 1/2, IIC gas group)
• Advanced Audio Performance: Loud, clear communication with intelligent noise suppression
• Full Keypad & Display: Enables messaging, navigation and advanced radio functionality
• DMR Digital Technology: Enhanced clarity, efficiency and spectrum performance
• Enhanced Worker Safety: Emergency button, lone worker and man-down functionality
• UHF Optimised Performance: Strong signal penetration in complex industrial environments

What Is Included

• Motorola MOTOTRBO™ R7Ex ATEX IIC UHF Radio (Full Keypad)
• ATEX Certified Battery
• ATEX Approved UHF Antenna
• ATEX Rated Belt Clip
• Dust Cover
• User Guide

System Capabilities

• Clear Digital Voice: Exceptional clarity in high-noise and hazardous environments
• Text Messaging: Send and receive messages via the full keypad interface
• Emergency Communications: One-touch emergency alerting for rapid response
• Worker Safety Features: Man-down, lone worker and emergency alerts
• Secure Communications: Supports encryption for secure operation
• System Compatibility: Works with Capacity Plus, IP Site Connect and conventional systems

Technical Specifications

• Frequency Band: UHF (400–470 MHz)
• Output Power: Up to 2W (intrinsically safe rated)
• Channel Capacity: Up to 1000 channels
• Display: Full colour display with keypad
• Battery Life: Up to 23 hours (usage dependent)
• Ingress Protection: IP68 (dustproof and waterproof)
• Operating Temperature: -20°C to +55°C (hazardous certified range)
• Audio Output: High-performance speaker with advanced noise cancellation

Approvals and Certifications

• ATEX Certified (IIC Gas Group, Zone 1/2)
• IECEx Certified (IIC)
• MIL-STD 810 (military-grade durability)
• IP68 Environmental Protection Rating
• Compliant with MOTOTRBO™ digital radio standards

Ideal Applications

• Oil & Gas: Safe communication in high-risk explosive environments
• Chemical Processing: Reliable communication in hazardous chemical plants
• Hydrogen & Gas Facilities: Certified for IIC environments including hydrogen and acetylene
• Pharmaceutical Manufacturing: Safe communication in controlled hazardous zones
• Utilities & Energy: Communication in high-risk industrial environments

Industries and Use Cases

• Oil and Gas
• Chemical and Petrochemical Processing
• Hydrogen Production and Storage
• Pharmaceutical Manufacturing
• Utilities and Energy
• Industrial Hazardous Environments

Understanding UHF vs VHF Radio Frequencies

UHF (Ultra High Frequency) radios, such as this Motorola R7Ex UHF model, are ideal for environments where signals need to penetrate buildings, structures and industrial obstacles. This makes them highly effective for indoor, plant-based and complex operational environments.

In comparison, VHF (Very High Frequency) radios are better suited for open outdoor environments where long-range communication is required with minimal obstruction. UHF is typically the preferred choice for hazardous industrial sites where reliable indoor coverage is critical.

Radio Programming & Setup Options

The Motorola R7Ex can be supplied unprogrammed for organisations that already have an existing system or programming capability. Alternatively, Airacom can programme and configure the radios to your exact requirements, ensuring they are fully operational and ready for immediate deployment.

Programming services include channel configuration, user groups, encryption and full system integration. This is available as an optional service, enabling a tailored communication solution that meets your operational and safety requirements.

System Compatibility & Scalability

The Motorola R7Ex is designed to operate across a range of MOTOTRBO™ communication systems, ensuring scalability and flexibility for growing organisations.

• Conventional Systems: Simple and effective communication for smaller teams
• IP Site Connect: Extends communication across multiple locations using IP networks
• Capacity Plus: Expands system capacity to support larger teams and higher communication demand

This ensures the radio can support both single-site and multi-site hazardous operations, providing a future-proof communication investment.

Product Information

• Manufacturer: Motorola Solutions
• Model: MDH57QCN9RA3AN
• Product Line: MOTOTRBO™ R7Ex
• Category: Intrinsically Safe Digital Two-Way Radio
• Frequency Range: 400–470 MHz (UHF)
• Certification: ATEX & IECEx (IIC, Zone 1/2)
• Warranty: 12 months manufacturer warranty (optional extended 2–5 year warranties available)