M50K In-Vehicle PTT Radio

Purpose-built for 12V and 24V fleet vehicles. One button. Australia-wide PTT. GPS tracking, OTAP, and the toughest in-cabin audio chain we’ve found — all in a unit that bolts in and stays in. Push to Talk for Fleets.

Features:

  • Works in 12V & 24V vehicles
  • Arrives pre-programmed
  • Australia-wide 4G coverage
  • Australian-owned network
  • 14-day free trial

The Hardware

Built to live in your vehicle, not just survive it

The M50K is a dedicated in-vehicle PTT radio — it bolts into your cab, draws power from your 12V or 24V system, and is on from the moment you turn the ignition. It connects to the Press2Talk network over 4G (with automatic WiFi offload when in a depot). The keypad microphone hangs where your driver can reach it, and the display shows who’s talking, missed calls, and channel status at a glance.

Why a dedicated radio outperforms a phone with a PTT app

  • One button. No unlock.
  • Audio built for cabin noise.
  • Powered by the vehicle.
  • Handles Australian conditions.
  • No distractions. It’s a radio.
  • OTAP — update the fleet remotely.

M50K — full specification

Specification Details
Working Voltage 13–24V DC Works in 12V cars, vans, and light trucks — and 24V heavy vehicles — without any adaptor or converter.
Dimensions 152.6mm × 43.4mm × 49mm Compact enough to mount cleanly in most vehicle dash, console, or under-dash positions.
Weight 250g Excludes the keypad microphone and mounting bracket.
Display 1.77″ colour LCD, 128×160 resolution Ultra-bright colour screen — readable in direct sunlight in the cab.
Operating Temperature –20°C to +55°C Operates through cold Canberra winters and hot Queensland summers without throttling or shutting down.
Storage Temperature –40°C to +80°C Can sit in a parked vehicle through extremes without damage to the hardware.
4G Network Bands (AU) FDD-LTE B1/B3/B4/B5/B7/B8/B20/B28A/B28B, TDD-LTE B40 All major Australian 4G bands including the B28 700MHz band used for regional coverage.
WiFi 2.4GHz & 5.8GHz Automatically uses depot or yard WiFi when available — saving cellular data and improving reliability on-site.
GPS GPS / A-GPS Accurate outdoor positioning; A-GPS improves indoor accuracy using cellular base station data.
RAM + ROM 512MB + 4GB
Operating System Android 6.0
Programmable Keys 3 × P buttons (P1, P2, P3) Programmable for function shortcuts — dial a contact, switch talkgroup, trigger a duress alert, or any other assigned function.

Key features at a glance

  • 12V/24V DC supply
  • Individual (1-to-1) calls using keypad mic
  • Unlimited talkgroups and channels
  • Full OTAP
  • Duress / SOS button
  • GPS location tracking and playback
  • Local voice recording with one-click last message playback
  • Missed call notification
  • SMS receipt to voice
  • Auto software update service
  • Bluetooth for audio accessories
  • High definition voice
  • Dual SIM support
  • Australia-wide 4GX/4G/3G coverage

Standard accessories

  • Mounting bracket
  • Power cable (12/24V)
  • 4G antenna
  • GPS antenna
  • Hand microphone with keypad (KME-231)

Unlock the full picture with Web Dispatcher

The M50K works as a standalone PTT device but pair it with the Press2Talk Web Dispatcher to track and manage every vehicle on your live operations map.

Who Uses the M50K

Built for any fleet that moves people or freight

  • Bus & Coach: Route-to-depot communication
  • Transport & Linehaul: Long-haul routes coverage
  • Construction & Utilities: Vehicle-mounted comms
  • Healthcare & Patient Transport: Reliable comms
  • Security & Patrol: Mobile security vehicles

Frequently asked questions

  1. Does the M50K work in both 12V vans and 24V trucks? Yes, it covers both.
  2. Will the M50K survive the heat? Yes, it operates between –20°C to +55°C.
  3. Can drivers make private calls? Yes, both group and individual calls are supported.
  4. Do you cover regional routes? Yes, it connects via all major Australian LTE bands.
  5. How does OTAP work? It allows you to push configuration changes remotely without technician visits.
  6. Why not use the PTT app? The M50K has dedicated features that make it superior in vehicle use.
  7. What does the 14-day free trial involve? You test pre-programmed units on your routes with no commitment.