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USB Relay Controller

RS-232 Relay Controller

RS-232 Relay Interface 16 Channel
AR-16 Relay Interface
RJ-8 Relay Card (shown below)

AR-16 Relay Interface..........$ 99.95 Quantity  

Click the add button to add accessories, then click BUY

CC-DE9S RS-232 Cable 9 pin...$ 8.95 Quantity  

CO-USB Cable with Driver CD$ 18.95 Quantity  

/C Opto Isolator Option (16 ch)$ 29.95 Quantity  

Additional Accessories


  • Designed for continuous 24 hour industrial operation
  • Commercial Grade reliability - 25 years of proven performance in the energy management field.
  • Connects to USB, RS-232 or optional RS-422, RS-485
  • May be connected directly to Internet or LAN using CO-LAN Ethernet to RS-232/RS-485 Device Server
  • Full technical support provided by on staff advisors
  • Expandable to control up to 128 relays using EX-16 or EX-32 expansion cards
  • Use the SW-A Load Programmer software for 7 day time control of relays
  • Optional Opto Isolated outputs available
  • Large variety of Relay Cards available... RD-8, RG-8, RH-8, RI-8, RJ-8, RYD-8, Specialty and others
  • Includes free Windows Desktop Control software and free Remote Network Control software (both Windows and Android)
  • AR-16 and RJ-8 are available with the TransZorb and self resetting fuse option
  • LabVIEW compatible, includes LabVIEW VI and graphic software example
  • Compatible with all versions of Windows including XP, Vista, Windows 7, Windows 8, Windows 10 and Windows 11
  • Open Source - Source code examples included in Microsoft Visual Basic 6, Microsoft Visual Basic.Net, C#, C++, Python, Microsoft ASP.Net, Assembly and others
  • Cables and power supply sold separately
  • Android Compatible - Use with your Android tablet or phone* - connects directly to USB port or controllable over network (LAN, Wi-Fi, Internet or Mobile network)
  • Connect your AR-16 Relay Interface to your Android tablet or phone's USB port! Click the Android for more info about the free Android Apps...
Click the Android for free Android USB and Network Apps! Android
*Smartphone applications can vary, please contact EECI support to check compatibility for your device

AR-16 USB Relay Controller

AR-16 Description and Spec

AR-16 Technical Reference

RS-485 Reference

AR-16 Remote Desktop

AR-16 Software Download

Relay Cards

AR-16 Source Code

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Electronic Energy Control, Inc.
14960 Maple Ridge Rd
Milford Center OH 43045-9016

TOLL FREE (24 hour order line)
(800) 842-7714

Technical Support (937) 349-6000
Internet Email

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All Rights Reserved
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