Entel DT953 Intrinsically Safe DMR Two-Way Radio (PMR446 ATEX IIC, Display)

The Entel DT953 is an intrinsically safe DMR (Digital Mobile Radio) portable from the DTEx series, built for hazardous areas where explosive gas or dust makes an ordinary radio an ignition risk.

It is certified to ATEX II 2G Ex ib IIC T4 Gb. Gas group IIC is the most stringent ATEX rating, covering acetylene and hydrogen atmospheres. Transmit power is capped at 2 W EIRP by the regulations that apply to this classification.

This model runs on PMR446, which is licence free in the UK — no Ofcom licence required, so a fleet can be deployed immediately.

This model

• Frequency range: PMR446 446-446.2 MHz (licence free)
• Transmit power: 0.5 W
• Channels: 99, across 8 zones
• Display: high-contrast OLED, configurable between large-character and detailed layouts
• Programmable buttons: 5
• Battery: CNB950EV2 1800 mAh Li-ion
• Battery endurance (5/5/90): 16.5 hours analogue, 19.5 hours digital

Built for hazardous areas

• IP68 to 2 metres for 4 hours — the highest submersibility rating of any manufacturer, and it holds even with the accessory cover removed.
• MIL-STD-810 C/D/E/F — thermal shock, humidity, shock, vibration, packing and drop tested.
• Lone Worker, Man Down and emergency button — three independent levels of alarm, all with call interrupt so an alarm gets through even when the channel is already busy.
• Personal attack button — sends an alarm call to other radios and sounds a local alarm.
• Validated accessory connector — any accessory plugged in is checked automatically, so a non-compliant accessory cannot quietly invalidate the intrinsic safety approval. Gold-plated, submersible and locking.

Operation and audio

• Ultra-tactile buttons and high-torque controls designed to be worked with gloves on
• Analogue and DMR digital modes, with mixed-mode operation for migrating a fleet gradually
• Two-slot simplex — both DMR timeslots are available without a repeater, doubling channel capacity
• Smart Speech Tailoring detects which accessory is connected and optimises the audio for it
• Multiple receive groups, talker alias, individual, group and all-call
• Supports third-party breathing apparatus comms kits

Licensed options

• AES 256-bit encryption (must be ordered with the radio)
• IP Site Roaming for seamless coverage across multiple DMR repeaters

End-user programming

A free drag-and-drop PC app is included. Your dealer emails you a programming file and you transfer it to the radio yourself — no need to return handsets or book a site visit to add features or apply updates.

Shared specifications

• Dimensions: 138 x 60 x 38 mm
• Weight: 435 g
• Channel spacing: 12.5 and 25 kHz
• Sensitivity: -121 dBm (0.2 µV) analogue at 12 dB SINAD, and digital at 5% BER
• Vocoder: AMBE+2
• Frequency stability: ±0.5 ppm
• Operating voltage: 7.4 V
• Rated audio power: 2 W
• Operating temperature: -20°C to +40°C (storage -40°C to +85°C)
• Ex protection: ATEX II 2G Ex ib IIC T4 Gb
• Ingress protection: IP68, submersible to 2 m for 4 hours
• Digital protocol: DMR Tier I

Supplied with

Li-ion battery pack, drop-in charger, spring-loaded belt clip, high-efficiency antenna and quick-start user guide.

Optional accessories include the CXR5/DT9 bone conductive skull mic, CXR16/DT9 throat mic, CHPD/DT9 and CHPHS/DT9 ear defender headsets, CMP/DT9S and CMP/DT9E speaker microphones, CSBHT six-pod rapid charger and CLCDT2 / CLCDT5 leather carry cases.

Supplied, programmed and supported by Yesway Communications, an authorised Entel dealer.