Motorola Solutions DP4401 Ex


Workers can confront threats from explosive gas or combustible dust, on an oil rig or in an open mine, daily. Safe, reliable communication is absolutely critical in such dangerous environments. That’s where the power and performance of MOTOTRBO digital radio stand out.

The DP4401 Ex ATEX-certified portable delivers unrivalled voice and data communications with integrated GPS plus best-in-class audio that includes Intelligent Audio and customizable voice announcements.

Available in UHF and VHF frequency bands, the DP4401 Ex is easy to use and features up to 32 channel capacity, three programmable buttons, emergency button, man down and lone worker functions and IP67 specifications for submersibility.

Technical Data

Potential Self-quieting Frequencies to be avoided:
VHF: 139.200MHz±10KHz, 144.000MHz±10KHz, 148.800MHz±10KHz, 151.000MHz±10KHz, 151.740MHz±10KHz, 153.600MHz±10KHz, 158.400MHz±10KHz, 163.200MHz±10KHz, 168.000MHz±10KHz, 171.900MHz±10KHz, 172.800MHz±10KHz

UHF: 403.200MHz±10KHz, 408.000MHz±10KHz, 412.800MHz±10KHz, 416.000MHz±10KHz, 422.400MHz±10KHz, 432.000MHz±10KHz, 440.000MHz±10KHz, 441.600MHz±10KHz, 449.550MHz±10KHz,
451.200MHz±10KHz, 456.000MHz±10KHz, 460.800MHz±10KHz, 468.000MHz±10KHz

Gas: ATEX: Class II 2G Ex ib, IIC T4 Gb, IECEx: Ex ib IIC T4 Gb
Dust: ATEX: Class II 2D Ex ib, IIIC T130°C Db, IECEx: Ex ib IIIC, T130°C Db
Mining: ATEX: Class I M2 Ex, ib I Mb, IECEx: Ex ib I Mb


  • VHF (136-174MHz); UHF1 (403-470MHz)
  • 32 channels
  • Large, textured push-to-talk button for ease of use
  • 3 programmable buttons to improve ease-of-use and increase operator efficiency
  • Tri-colour LED for clear visual feedback on radio operating status
  • Emergency button to help ensure rapid response to critical incidents
  • Quick, easy-to-use Group, Individual and All-call capability
  • Digital Phone Patch capability
  • Sophisticated Emergency Calls help ensure employee safety
  • PTT ID helps improve communications efficiency and system discipline
  • Remote Monitor features help ensure employee safety and enable fast assessment of remote user status
  • Elegant channel scanning schemes help ensure calls are received first time every time
  • Privacy Features
  • VOX Capability
  • Transmit Interrupt
  • Man Down
  • Lone Worker
  • Analogue Mode Compatible
  • 5 Tone Signalling
  • Integrated GPS
  • Over the Air Programming
  • Intelligent Audio allowing the radio volume to automatically adjust to compensate for background noise.
  • IP67 ingress protection (also certified to the highest ingress protection available under ATEX/IECEx test conditions – IP64)
  • Direct Mode (Including Dual Capacity Direct Mode) / Repeater Mode
  • IP Site Connect (Conventional Multiple Site Coverage)
  • Capacity Plus (Single Site Trunking)
  • Linked Capacity Plus (Multi-Site Trunking)

The basic package includes

  • 2075mAh (Typical) Li-ion Battery (NNTN8359_)
  • IMPRES Single-Unit Charger
  • Antenna
  • Dust Cover (15012157001)
  • 2.5″ Belt Clip (PMLN6086_)
  • In-box Documentation
  • NOTE: The 24 months warranty only applies to the radio, it does not apply to batteries or accessories shipped within the model package. Service From the Start packages are also available.
Channel capacity 32
Power Output 1W
Frequency UHF B1 (403-470MHz) and VHF (136-174MHz)
Dimensions H x W x L (mm) 138.5 x 56.7 x 37.8mm
Weight with battery 455.5g
Battery life 16 – 19hrs
Dust and water intrusion ATEX: Class II 2D Ex ib IIIC T130 °C Db
Frequency UHF B1 (403-470MHz) and VHF (136-174MHz)
Channel Spacing 12.5/20/25KHz
Frequency stability ±0.5ppm
Analogue Sensitivity 0.25uV
Intermodulation 70dB
Adjacent Channel Selectivity 60dB @ 12.5kHz / 70dB @ 20/25kHz
Spurious Rejection 70dB
Rated Audio 0.5W
Audio Distortion @ Rated Audio 5%, 3% (typical)
Hum and Noise  -40dB @ 12.5kHz
-45dB @ 20/25kHz
Audio Response TIA603C
Conducted Spurious Emissions -57dBm
Frequency UHF B1 (403-470MHz) and VHF (136-174MHz)
Channel Spacing 12.5/20/25KHz
Frequency Stability ±0.5ppm
Power Output 1W
Adjacent Channel Power 60dB @ 12.5kHz, 70dB @ 20/25kHz
Audio Response TIA603C
Audio Distortion 3%
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