Motorola / Hytera Technical Deep Dive

DP4401Ex vs GP340Ex — DMR vs Analog ATEX Certification Architecture

DP4401Ex — DMR ATEX Zone 1 with GPS and 16–19 h IMPRES 2 Battery

DMR digital portable with ATEX/IECEx Zone 1 certification for gas and dust environments. 5W UHF output with TDMA dual-slot doubling channel capacity. AES-256 encryption standard. Integrated GPS/GLONASS with man-down accelerometer for autonomous worker safety. IP67 rated with 2,900mAh IMPRES 2 battery delivering 28 hours. Supports Capacity Max trunking for up to 15 sites. 1,500mAh standard battery option provides 19 hours for lighter shifts. Designed for oil rigs, chemical processing plants, and refineries where digital features (text messaging, GPS tracking, trunking) are mandatory and multi-shift battery life is critical.

GP340Ex — Analog ATEX Zone 1 with 16 Channels Battery

Analog portable with ATEX/IECEx Zone 1 certification. Simple 16-channel UHF/VHF operation with no display and rotary channel selector. 5W output with CTCSS/DCS signaling. 14-hour battery. Certified to MIL-STD 810 C-F for shock, vibration, and thermal shock. No digital features — purely push-to-talk voice in the harshest environments. Compact form factor with large tactile controls for gloved-hand operation. Dominant in underground mining, offshore platforms, and fuel depots where Zone 1 certification is legally required and analog simplicity ensures zero-training deployment.

Data Source: Motorola Solutions ATEX Product Line Technical Datasheets Verified: July 29, 2026

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