Motorola DP4401ex Walkie Talkie
Motorola DP4401ex
motorola dp4401ex is atex walkie talkie certified to keep every spark of conversation—and every worker—safe.with IIC T4 ATEX gas protection, IP67 sealing, and MIL-STD shock rating. Whether you’re modernising a refinery with phased Capacity Max rollout or deploying emergency channels in a methane-rich mine.
Main features
ATEX, IECEx & Mining M2 Certifications
Class II 2G Ex ib IIC T4 Gb + Class I M2 Ex ib I Mb covers Zone 1/2 gases, Zone 21/22 dust, and underground firedamp—one SKU for every hazardous area.
IP67 & MIL-STD 810G
Survives 2 m drops onto steel decks, high-pressure wash-downs, and –20 °C to +55 °C swings—validated on offshore rigs and desert refineries.
DMR Tier II / Tier III Ready
Dual-slot direct mode doubles capacity; migrate to IP Site Connect or Capacity Max without forklift upgrades.
AES-256 & Enhanced Privacy
Encrypted group, private, and emergency calls meet IECEx and corporate cyber mandates—no external crypto boxes.
Integrated Man-Down & Lone-Worker
3-axis accelerometer triggers automatic emergency call with GPS/GLONASS coordinates—perfect for confined-space teams.
19-Hour IMPRES Battery
1650 mAh slim or 2900 mAh high-cap packs plus over-the-air battery analytics keep three-shift crews talking.
Large PTT & Glove-Friendly Knobs
Raised buttons and orange emergency key ensure operation through chemical suits and winter gloves.
1000-Channel / 250-Zone Memory
Segment by plant, shift, or emergency plan; import via CPS or push OTA updates over Wi-Fi.
ATEX-Certified Audio Accessories
IMPRES RSM, Peltor headsets, and vibrator holsters maintain Ex rating end-to-end—no compliance gaps.
Class II 2G Ex ib IIC T4 Gb + Class I M2 Ex ib I Mb covers Zone 1/2 gases, Zone 21/22 dust, and underground firedamp—one SKU for every hazardous area.
IP67 & MIL-STD 810G
Survives 2 m drops onto steel decks, high-pressure wash-downs, and –20 °C to +55 °C swings—validated on offshore rigs and desert refineries.
DMR Tier II / Tier III Ready
Dual-slot direct mode doubles capacity; migrate to IP Site Connect or Capacity Max without forklift upgrades.
AES-256 & Enhanced Privacy
Encrypted group, private, and emergency calls meet IECEx and corporate cyber mandates—no external crypto boxes.
Integrated Man-Down & Lone-Worker
3-axis accelerometer triggers automatic emergency call with GPS/GLONASS coordinates—perfect for confined-space teams.
19-Hour IMPRES Battery
1650 mAh slim or 2900 mAh high-cap packs plus over-the-air battery analytics keep three-shift crews talking.
Large PTT & Glove-Friendly Knobs
Raised buttons and orange emergency key ensure operation through chemical suits and winter gloves.
1000-Channel / 250-Zone Memory
Segment by plant, shift, or emergency plan; import via CPS or push OTA updates over Wi-Fi.
ATEX-Certified Audio Accessories
IMPRES RSM, Peltor headsets, and vibrator holsters maintain Ex rating end-to-end—no compliance gaps.
Other functions
- Channel / Zone Selection
- TX Power High / Low
- Scan List & Priority Edit
- Emergency Button Mode
- Lone-Worker Timer
- Man-Down Sensitivity
- Encryption On/Off (AES-256)
- Voice Announcement Language
- Programmable Side Key Assignment
- Over-the-Air Programming Enable
Accessories
- Battery NNTN8359
- Antenna PMAE4084 / PMAE4085
- Lanyard
- Back Clip
- Charger
- Power adaptor
- Manual
Specification
| General Specifications | |
| Band | VHF: 136-174 MHz UHF: 403-470 MHz |
| High Power Output | 1 W |
| Channel Spacing | 12.5 / 20 / 25 kHz |
| Channel Capacity | 32 |
| Dimensions (H×W×D) | 138.5 × 56.7 × 37.8 mm |
| Weight (radio + 1600 mAh battery) | 455.5 g |
| Battery life (1600 mAh) | 11.5–16.0 hrs (digital/analog) |
| Power supply (nominal) | 7.5 V |
| Transmitter Specifications | |
| 4FSK Digital Modulation | 12.5 kHz Data: 7K60FID & 7K60FXD 12.5 kHz Voice: 7K60FIE & 7K60FXE 12.5 kHz Voice + Data: 7K60FIW |
| Digital Protocol | ETSI TS 102 361-1,-2,-3 |
| Conducted / Radiated Emissions (TIA-603D) | -36 dBm <1 GHz -30 dBm >1 GHz |
| Adjacent Channel Power | -60 dB @ 12.5 kHz -70 dB @ 25 kHz |
| Frequency Stability | ±0.5 ppm |
| Audio Specifications | |
| Digital Vocoder Type | AMBE+2 |
| Audio Response | TIA-603D |
| Rated Audio | 0.5 W |
| Audio Distortion at Rated Audio | 3 % |
| Hum and Noise | -40 dB (12.5 kHz) -45 dB (25 kHz) |
| Conducted Spurious Emissions (TIA-603D) | -57 dBm |
| Environmental Specifications | |
| Operating Temperature | -20 °C to +55 °C |
| Storage Temperature | -40 °C to +85 °C |
| Electrostatic Discharge | IEC 61000-4-2 Level 4 |
| Dust & Water Intrusion | IEC 60529 – IP68 capable |
| Packaging Test | MIL-STD 810D & E |
