# Professional Digital Mobile Radios: When You Need Clear, Reliable Communication  
Vehicle Solution    
iPTT M400    
Professional Mobile Radio    
Professional vehicle-mounted PTT radio with integrated display, offering enhanced power output, external antenna support, and continuous duty operation for demanding fleet communication requirements.

Professional Choice - The iPTT M400 vehicle-mounted radio delivers enhanced power and external antenna support for fleet communications. Get reliable coverage whether you're in the city or remote countryside.

## Why iPTT Digital Mobile Radios are Trusted by UK Professionals  
M400 Professional Mobile Radio

Enhanced power output, external antenna support, and continuous duty operation for demanding fleet communication requirements.

## Key Features of iPTT Digital Mobile Radios  
Key Features

- Vehicle Mount
- 2W+ Power
- GPS
- External Antenna
- Fleet Ready
- Continuous Duty

## Digital Mobile Radio vs Walkie Talkie  
Specification

|     |     |
| --- | --- |
| Display | 2.4" Color LCD |
| Power Output | 2W+ Enhanced |
| Power Supply | 12V/24V Vehicle |
| Weight | 450g |
| Dimensions | 160 x 80 x 45mm |
| Frequency | 4G LTE Nationwide |
| Audio Output | 2W+ Speaker |
| Operating Temperature | -20°C to +60°C |
| Antenna Support | External VHF/UHF |
| Emergency Features | SOS Button, Man Down |

## Our iPTT Device Solutions

**iPTT P400**  
4G POC Portable Radio  
Rugged radio with 4200mAh battery, GPS tracking & 1000mW audio output  
**iPTT P400 Features**  
- Rugged dust & splash protection  
- 4200mAh Li-ion battery  
- 1000mW audio output  
- Built-in GPS tracking  
- Panic/Emergency button  
- VOX hands-free mode  
- Voice recording  
- OTA updates  
- Lone worker mode  
Click to view full brochure →](/content/devices/portable-radios/p400/index.html)  
  
**iPTT P500**  
4G POC Portable Radio  
IP54 rated with WiFi/Bluetooth, NFC, A-GPS & 3600mAh battery (5200mAh optional)  
**iPTT P500 Features**  
- WiFi 2.4GHz/5GHz support  
- Bluetooth & NFC connectivity  
- A-GPS positioning  
- 3600mAh/5200mAh battery  
- IP54 protection rating  
- Global PTT service  
- Radio kill/stun/revive  
- Over-the-air programming  
- API for custom apps  
Click to view full brochure →](/content/devices/portable-radios/p500/index.html)  
  
**iPTT P600**  
Multi-Mode Advanced Radio  
Advanced multi-mode radio with GPS integration. Ideal for teams needing reliable communication and location tracking.  
**iPTT P600 Features**  
- Multi-mode functionality  
- Advanced GPS integration  
- Professional communication  
- Location tracking  
- Team coordination  
- Reliable connectivity  
- Enterprise features  
- Real-time monitoring  
- Secure communication  
Click to view full brochure →](/content/devices/portable-radios/p600/index.html)  
  
**Multi-Network SIM**  
Unsteered Network Selection  
Auto-roaming between 3-4 networks, finds strongest signal & switches 4G→3G→2G  
**Multi-Network SIM Features**  
- Unsteered SIM technology  
- Auto network selection  
- 4G→3G→2G switching  
- Multi-operator roaming  
- Signal strength priority  
- Intelligent failover  
- Maximum coverage  
- Cost optimization  
- Redundancy protection  
Click to view full brochure →](/content/sims/index.html)

## Professional Digital Mobile Radio

Transform your vehicle communications with the world's professional **digital mobile radio** solution. Enhanced power, external antenna support, and continuous duty operation for demanding fleet requirements.

[Get Professional Quote](/content/contact/index.html)