M2M Control C521

The M2M Control C521 is a compact 3G (GSM, UMTS,HSPA) and GNSS/GPS based telematics platform. The waterproof and ruggedized module (IP66) is especially suitable for mobile tracking and control applications. 

The C521 is fully programmable (IEC 61131-3 ST) and configurable by the user-friendly M2M Control IDE development environment, either locally via USB port or remotely via GPRS network (FOTA: firmware-over-the-air).

The unit is equipped with an enhanced set of features, including large memory capacities for data logging, a micro SD-Card, CAN 2.0B bus interface, 2 digital inputs, 2 solid-state outputs (0.5A), 1 analog inputs and is powered by 10-36Vdc. The unit is based on our high performance 32-bit ARM7 platform comes with advanced power management and has extremely low power consumption.

The C521 offers a extremely high sensitivity 99-channels GNSS/GPS receiver with unseen performance allowing precise positioning in the most difficult environments such as deep urban or even indoor-tracking and supplemented by a 3D-movement sensor .

The 3G communication includes a full TCP/IP stack supporting standard protocols like SMTP, FTP and MQTT as welll as our M2M GPRS Gateway and virtual SQL middleware solution.

The unit has a 2004/104/EC UN ECE R10 (E1) approval for automotive electronics.

Instead of a CAN bus we offer this module as M2M Control C520 also with a RS-232 and 1-Wire interface.


M2M Control C521


  • Real-time clock
  • Voltage monitoring
  • Temperature sensor
  • 3 bi-colored LED's
  • 1 MB for data logs
  • 3.5 MB flash memory for           
    applications and voice
  • 2 MB for programs
  • 1 MB RAM / 8 KB FRAM
  • microSD card with FAT32


  • CAN 2.0B
  • ISM RF (868 MHz) Transceiver
  • SIM card or SIM chip
  • Power saving modes
  • Vibration sensor
  • high-performance GPS-receiver
  • 3-Axis Accelerometer (+/- 16g)
  • internal battery 900 mA
  • MQTT Protocol support



I/O Interface

  • 2 digital inputs
  • 2 solid state outputs:  0.5A, 12V
  • 1 analog inputs:  0-10Vdc, 10 Bit Resolution


  • GSM
  • FTP
  • Email (SMTP)
  • MQTT
  • TCP/IP / UDP


  • Penta-band UMTS/HSPA. GSM: 850/900/1800/1900 MHz.
    UMTS: 800/850/900/1900/2100 Mhz.
    • CSD data call with up to 14.4 Kbp
    • SMS (text and PDU)
    •  Voice
  • RF Transceiver 868 MHz (optional)
  • CAN2.0B (J1939)
  • USB Programming Port


  •  Mediatek MT3333 Multi-GNSS chip.
  •  99 acquisition / 33 tracking channels.

Power Supply

  • Operating voltage: 10-36 Vdc
  • Consumption:  50-75mA @12Vdc
                         < 0,5mA in powerdown mode


  • Dimension:    W 92 x H 30 x D 58 mm
  • Weight:          0.3 Kg
  • Protection:      IP66