Entel DT585U Digital Radio

Designed In the UK, The Entel DT585U IECEx-certified DMR Handheld Radio

Entel’s DMR Digital Series is crafted to industrial-grade standards, prioritising uncompromising quality. This IECEx-certified portable device delivers outstandingly loud and clear audio, which is crucial for environments with high ambient noise.

Designed to address users’ safety and business-critical requirements, both display and non-display models are adaptable and packed with features, allowing configuration for either simple or complex systems.

Boasting a top-tier IP68 submersible rating (2 metres for 4 hours), the DTEx is built to endure everyday use in extreme and challenging conditions. Its ultra-tactile buttons and high-torque controls are designed for easy operation, even when wearing gloves.

To ensure clear communication for your workforce, we offer a wide range of certified and approved audio accessories for the DTEx Series, including bone-conductive skull microphones and ear-defender headsets. For a complete list, please refer to our accessories section.


Available in VHF & UHF.



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General Environmental Protection to IP68 (2 Metres for 4 Hours) – The DTEx Series boasts the highest submersible rating among manufacturers. This rating ensures protection against corrosion, withstanding complete immersion in water to a depth of 2 metres for 4 hours, safeguarding against hazards in extremely wet conditions.

MIL-STD 810C/D/E/F – The DT585U Series radios adhere to MIL-STD 810C/D/E/F, offering commercial-grade construction for durable performance. These radios meet stringent standards, enabling them to endure daily exposure to shock, vibration, and the corrosive effects of dust and moisture, ensuring years of reliable use.

Robust Accessory Socket -The accessory socket on DT585U radios is designed to endure significant wear and tear. It can withstand impacts and misuse, with a rugged, multi-pin interface and micro-USB socket that are both submersible and gold-plated to minimise damage and prevent corrosion. To maintain IS protection levels, connected accessories undergo a validation process to ensure compliance. All DTEx accessories feature a robust locking connector for additional user safety.

High Contrast White on Black OLED Display – The DT585U display models feature a high contrast white on black OLED display, providing excellent readability in varying lighting conditions and enhancing the intuitive user interface.

Li-ion Battery Technology & Improved Talk Time – DT585U radios are supplied with the latest intelligent Lithium-ion battery technology. This technology eliminates the memory effect, always ensuring a full charge. The radios also benefit from TDMA Digital mode signalling, which increases battery endurance by up to 40%, providing longer standby and talk times.

Superior Audio – Utilising advanced noise reduction technology, Entel’s DTEx portables deliver clear and loud audio in any environment. All DTEx accessories include a robust locking plug and high-grade cable, enhanced by Entel’s proprietary ‘Smart Speech Tailoring’ technology. This technology detects the type of accessory connected and optimises the audio for the best performance.

Convenience Field Upgradeable – Entel continuously adds and improves features on its DT585U radios via free software updates. Using the innovative ‘End User Programmer app’, Entel DT585U radios can be easily upgraded without requiring a dealer visit, saving time and expense.

TDMA Two-Slot Direct Mode (also known as ‘Two Slot Simplex’) – The DMR Digital standard divides a single 12.5Khz Analogue channel into two separate channels, effectively doubling the number of available channels. While Two-Slot operation typically requires a DMR Repeater, Entel DMR radios support this function on both Simplex and DMR446 channels, making both slots available regardless of channel type.

Mixed Mode Operation – In Mixed Mode, the radio can receive both DMR Digital and Analogue signals without changing channels. This is useful when both analogue and Digital radios are used together, such as when transitioning from an existing analogue system to a DMR Digital system.

Keylock – The radio’s keys and controls can be locked to prevent accidental operation.

Programmable Channel Monitor Button – If channel protection is enabled on your DT585U portable, signals from other networks are filtered out. This can be temporarily disabled to monitor all signals on your channel.

Multiple Channel Zones – Entel radios support up to 8 channel zones, with up to 99 channels per zone. These zones can be used to store channels for different sites or user groups.

Individual, Group Calling & Caller ID – The DT585U models offer both Individual and Group calling, which is selectable via the channel control and, on display models, the large contact list. Display models can also show the caller’s ID.

Text Messaging – Using the DMR messaging protocol, Entel radios can send and receive text messages to and from other devices, including alarm panels, PC dispatchers, and other radios.

Programmable Switch-On Logo – Custom logos can be uploaded to Entel display radios to be displayed when the radio is powered on.

All Call – This feature allows the simultaneous calling of all radios on the channel, which is helpful for essential announcements like emergency safety evacuations.

Memory Scan – Users can create and modify their own channel scan list.

Audio Accessories & BA Support – Entel offers a wide range of audio accessories, from simple earpieces to bone-conductive options for high-noise environments. Third-party Breathing Apparatus communication kits are also supported. Entel’s Sure Speech™ technology optimises audio based on the connected accessory, ensuring clear and natural sound.

Safety IECEx Approval – The DT585U series is intrinsically safe certified and delivers 4 watts of transmitter power. It is suitable for users outside Europe who do not need to comply with the European ATEX standard.

Personal Attack Button – DT585U portables include a programmable personal attack button. When activated, the radio sends an alarm call to other radios and sounds a local alarm.

Lone-Worker & Man-Down Alarms – DTEx radios support Lone-Worker, Man-Down*, and Emergency Button features in Digital mode, with call interrupt. This dealer-programmable, three-level safety system ensures an alarm is raised promptly, even on a busy channel. *Optional.

Tech Specs


Frequency Range UHF 450-520 MHz
Channels 99
Number of Zones 8
Vocoder AMBE+2™
Battery CNB550EV2 1800mAh Lithium-ion
Overall Dimensions (HxWxD) 138mm x 60mm x 38mm
Frequency Stability ±0.5ppm
Operating Voltage 7.4v
Programmable Buttons 3
Channel Spacing 25KHz / 12.5KHz
Battery Endurance (5/5/90 duty cycle @ 4W) Analogue 10 hours
Digital 15 hours
Battery care information: Visit entel.co.uk/battery_care


Output Power 4 W (High) / 1 W (Low)
Modulation Limiting ±5.0KHz / ±2.5KHz
FM Hum and Noise >-45dB / >-40dB
Unwanted Emissions -57dBm up to 1GHz, -47dBm from 1GHz to 4GHz
Adjacent Channel Power >60dBc
Audio Response (FM) 300Hz to 3KHz -6dB/Octave
Audio Distortion <5%
FM Modulation 16K0F3E / 8K0F3E
4FSK Digital Modulation 7K60FXE / 7K60FXD


Digital Sensitivity -121dBm (0.2uV) for 5% BER
Analogue Sensitivity -121dBm (0.2uV) for 12dB SINAD
Intermodulation Response >65dB
Adjacent Channel Selectivity >70dB / >60dB
Spurious Rejection >70dB
Rated Audio Power 2 Watts
Audio Distortion <5%
Hum and Noise >-45dB / >-40dB
Audio Response 300Hz to 3KHz -6dB/Octave
Conducted Spurious Emission (ETSI) -57dBm up to 1GHz, -47dBm from 1GHz to 4GHz


Ex Protection Ex ib IIA T4 Gb
Operating Temperature -20°C to +40°C
Storage Temperature -40°C to +85°C
Thermal Shock, Humidity, Shock & Vibration, Packing Test, Drop Test Compliant MIL-STD-810 C/D/E/F
Dust & Liquid Ingress IP68 (2m 4h Submersible)

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