C650 (discontinued)

Powerful telematics system with 3G / UMTS

Perfectly equipped for demanding telematics applications that place high demands on positioning, communication, interfaces and free programmability (edge computing).


One device – all functions integrated

3G/UMTS mobile communications
GNSS receiver
Data Logger
Control (PLC)

Precise positioning with GPS, GLONAS, Galileo and QZSS; 3D accelerometer, CAN for vehicle connection, numerous other interfaces (RS232, RS485, 1-wire, USB, digital/analogue I/O, audio, …) and protocols (including Modbus, MQTT) as well as a 3G/UMTS mobile network connection make the C650 the ideal platform for demanding telematics applications.

Powerful vehicle integration

A complete CAN 2.0B interface with hardware filtering and multi-speed support allows comprehensive data acquisition in vehicle installations. Additional units without CAN connection can be flexibly connected via the other interfaces of the C650.

Precise positioning

The C650 has a high-sensitivity GNSS receiver with support for GPS, GLONASS, Galileo and QZSS (99 acquisition channels / 33 tracking channels) with noise suppression and jamming protection. The support of DGPS (WASS, EGNOS, MSAS and GAGAN) further increases the positioning accuracy. A 3-axis accelerometer completes the equipment. An extension to inertial navigation is optionally available.

Sophisticated energy management

A built-in UPS (integrated LiIon battery), low power consumption and five execution speeds with wakeup events from various sources allow safe operation even on switched on-board power systems.

Integrated mobile communication

The C650 has a 3G/UMTS modem with fallback to 2G/EDGE/GPRS, bringing mobile communications directly into your applications. Easy to use for connection to all leading cloud platforms, as fault indicator directly with SMS or voice with IVR (Interactive Voice Response) and DTMF or for communication with other M2M controllers. Thanks to the Integrated Development Environment (IDE), programming distributed applications is as easy as programming a single PLC.

Performance and security for edge computing

The C650 is based on an RTOS real-time core with IEC 61131-3 runtime environment. The 32-bit ST Arm®processor provides more than enough power and memory for your edge-computing applications. AES encryption and a certificate management for all important TCP based protocols (e.g. MQTT, SMTP, TCP/IP Sockets) offer a high security for your communication, e.g. with a cloud.

I/O interfaces for all needs

The C650 has 5 digital inputs, 4 digital solid state outputs (36V / 1.5A) and 2 analog inputs. The interface equipment is completely transparently expandable via Modbus modules for the user software and can be extended almost indefinitely.

Versatile communication

In addition to the mobile phone connection, the C650 has a large number of interfaces: CAN-2.0, RS-232, RS-485 and 1-Wire. For easy use of the interfaces, the development environment provides support for a variety of protocols such as TCP/IP, UDP, SMTP, FTP, MQTT, 1-Wire, M-Bus, Modbus (Master and Slave).

All details

If you need further information: We have compiled the essential technical data and are at your disposal for a consultation by phone or email.

Hardware core

  • 32-bit ST ARM CPU
  • 2.112 KB fast execution RAM
  • 4.532 KB Flash (firmware/application)
  • 7.5 MB persistent data Flash
  • 1 MB circular data logger
  • 20 KB FRAM (unlimited write cycles)
  • Real-time clock with battery backup


  • Integrated firewall
  • AES-128 Encryption
  • Certificate management


  • Persistent DataFlash (data logger)
  • Battery-buffered S-RAM
  • Internal flash drive
  • Circular data logger
  • SD card slot (up to 32 GB)


  • Multi-band 3G/UMTS/HSPA with fallback to 2G (GPRS/EDGE)
  • 3G: 800 / 850 / 900 / 1900 / 2100 Mhz
  • 2G: 850 / 900 / 1800 / 1900 MHz
  • DTMF Decoder / Transmitter
  • Voice Messages / IVR
  • eCall Emergency Services
  • SMS / PDU
  • Mini SIM (1.8 / 3 V)
  • eSIM (option)


  • Multi GNSS: GPS, GLONASS, Galileo and QZSS
  • 99 acquisition / 33 tracking channels
  • A-GPS capable
  • Anti-jamming, Noise cancellation
  • Active 3 volt GNSS antenna support
  • Position update with up to 4 Hz.


  • Full Digital Audio System
  • Transferring, saving, and playing audio
  • Line+Speaker Output
  • Microphone input
  • GSM audio support


  • CAN 2.0B
  • Hardware-Filtering
  • Multi-Speed -Support

Wired communication

  • 2x RS232
  • 1x RS485 with Modbus support
  • 1-Wire Bus

Digital I/O

  • 4 x Digital solid state output (max. 36 V - 1.5 A)
  • 5 x digital input
  • Transient protection
  • Low pass filter
  • expandable with Modbus modules

Analog I/O

  • 2x analog input (0..10V)
  • 12 bit resolution; ±1.5% FSR @ 25°C
  • Low pass filter
  • Transient protection
  • expandable with Modbus modules

Electrical data

  • Operating voltage 8..36 V DC
  • Reverse polarity protection

Battery and charging logic

  • Internal 2Ah Li-Ion Battery
  • Intelligent charger with temperature controller and support for temperatures below zero degrees
  • Battery temperature sensor


  • Power-saving modes
  • Events: Timer, digital input, RS232, GSM, Accelerometer, CAN, Power Change
  • Battery temperature sensor


  • Operation: -35..+60 °C
  • Battery charging: -10..+45 °C
  • Storage: 0..+45 °C (recommended)
  • Humidity: 5..90 (non-condensing)

Mechanical data

  • Dimensions (mm, without connections): 97 (W) x 132 (L) x 35 (H)
  • Aluminium/plastic housing
  • Weight: approx. 300g (without accessories)
  • Optional mounting bracket


  • E1 type approval: 2004/104/EC UNECER10-ed3
  • CE mark / Applied R&TTE directive
  • GSM engine: CE/GCF/FCC/PTCRB