Ctek SkyRouter - Series Z4400 Controller

Series 4400 Skyrouter - Same Platform at a Savings

For over a decade, Ctek's SkyRouter product line has set the standard for industrial cellular data communications. As the capabilities of wireless networks have matured, the SkyRouter has kept pace, and today it is available globally for all major network technologies. It stands alone as the most complete cellular router package available including IT-quality routing, tunneling and encryption protocols and a unique set of out of band SMS management commands.

With its powerful ARM processor and large memory footprint, the SkyRouter has proven itself an effective cellular device server capable of hosting applications as diverse as image processing and irrigation control. Building on its Linux-based open-source heritage, SkyRouter customers have available a no-charge SDK and access to numerous APIs that enable the platform's wireless capabilities.

Ctek also offers a number of prebuilt applications for the SkyRouter including the Automation Control package which contains a rich set of PLC capabilities surrounded with an intuitive menu based rapid development environment. A SkyRouter equipped with the Automation Control application provides the customer with a complete wireless application platform that requires no coding and yet is capable of monitoring and controlling a variety of applications. When combined with Ctek's SkyCloud Service, the endpoint application becomes a component of the customer's overall cloud application environment




  • 850 (B5)
  • 1900 (B2)
  • 2100 (B1)

GSM/GPRS Fallback

  • GSM 850
  • EGSM 900
  • DCS 1800
  • PCS 1900


  • Dual-SIM 2FF
  • DL MIMO/Rx Diversity Support


  • AT&T, T-Mobile, Bell, Rogers, Telus

Host Interfaces

  • 10/100 Ethernet
  • 1 RS-232
  • 2 RS-485
  • 1 Full-Speed USB
  • 1 High-Speed Micro-USB OTG; supports RNDIS/EEM/ECM
  • 1 Digital Input
  • 1 Digital Output
  • 1 Analog Input

Platform Architecture

Operating System

  • Atmel ARM9 Processor
  • Linux 3.16 Operating System


  • 128MB DDR2 RAM
  • 256MB SLC NAND Flash
  • 1 microSD Slot


  • Input: 9 - 24 VDC
  • Consumption: 190 mA*

*Ethernet not connected, varies with signal level


  • Operating Temperature: -30 to +70°C
  • Humidity: 90% Non-condensing

Dimensions & Weight

5.45"L x 4.72"W x 1.45"H

10 oz without power adapter


Data Interface Support

  • Digital
  • Analog
  • Pulse
  • USB
  • Ethernet
  • RS485/232
    • TCP/UDP PAD Support
    • RS485/TCP Support
    • Master/Slave Configurations
  • Virtual Data Space

Advanced Configuration

  • Pin assigned data for quick referencing within the application
  • Built-in Calculator to build formulas and transform raw data for further processing
  • Built-in sensor calibration tool
  • Support for read/write of all MODBUS register types
  • Configurable decimal precision

Data Specific Communications

  • Customizable data names
  • Define custom on/off labels for binary data
  • Specify a unit of measure
  • Enable logging and log time intervals
  • Apply visual gauge and indicator features
  • Enable data graphing and charts
  • Define alarm communications method
  • Allow data to be viewed on Ctek's SkyCloud Portal

Build Programs

  • Use "Virtual" pins to store values and perform numeric arithmetic
  • Set hex values or set/clear bits
  • Execute local and remote control
  • Initiate time functions such as couter, watchdog, and clock timers
  • Perform wear-leveling and control on motor groups
  • Set and monitor Geo-Fences

Build Logic

  • Define level and edge sensitive thresholds
  • Definable hysteresis offsets on thresholds
  • Custom messages for any threshold
  • Trigger SMS/E-mail alarms at thesholds
  • Define thresholds to execute programs that can perform control and monitoring


Ctek Z4400 Feature Summary

  • Built-In GPS
  • Built-in Geo-fence application
  • SMS - MO/MT
  • Always available WAN connection
  • Firewall with TCP/UDP port forwarding
  • LAN Addressing - Class C address range
  • DIN rail mountable
  • Web Based Administration
  • Built-in Serial PAD - TCP/UDP
  • Over-The-Air Updates
  • Linux 3.16.X OS
  • Multiple time source selevtions
  • DC Power - 9 - 24VDC
  • No Charge development kit
  • Private labeling available