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ADU218 USB Solid-State, 8 channel, Relay I/O interface ( 1 amp )

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ADU218 USB Solid-State Relay I/O Interface ( Dimensions, 5.1" X 2.8  X 1.0" )

The ADU218 USB  Solid-State Relay I/O Interface allows control of 8 SSR outputs, 8 contact or TTL inputs, and 8 event counters via a USB port.  The ADU218 can effectively convert  a standard PC to a powerful   PLC ( programmable logic controller ). High quality PhotoMOS solid-state relays switch AC or DC loads. This low-cost serial relay contact  interface is easy to use with VB, VB.NET, and Visual C++ via standard HID drivers included with Windows 98,2000,XP.  A mini-driver ( DLL )* is also provided allowing control using standard ASCII commands using familiar readfile , writefile commands.  The ADU218 includes a 10' USB cable and is available as a PCB or in an enclosure with several mounting options.

Click here to downoad ADU218 USER MANUAL in PDF Format ( 700K)

* View AduHid.dll  on-line software develoment kit ( SDK ) on our Programming page.

Key Benefits, ADU218  USB Relay I/O Interface

  • Provides a standard PC with PLC ( programmable logic controller ) functions.
  • Low-cost .
  • Bus Powered, No external power supply required.
  • 8, N. O. SSR outputs rated  1.0A @ 120VAC, 1.0A @ 120VDC
  • CSA/UL Approved,  CE Marked
  • High quality PhotoMOS relays switch AC or DC loads.
  • 8 Digital inputs suitable for contact or TTL  Input , also accept up to 24VDC
  • Inputs feature optical isolation to 3500V ( 500V channel to channel )
  • Programmable watchdog functions.
  • Bi-colour LED status indicator.
  • Self-resetting, fused 5V output
  • High quality cage-clamp type terminal blocks.
  • Uses standard HID drivers included with Windows 98SE,2000,XP
  • Mini-driver ( DLL ) provided for use with VB,VC, LabVIEW and TestPoint
  • Programming examples and sample code included for VB, VB.NET, Visual C++
  • Eight,  16-bit event counters
  • Programmable debounce setting for event counters.
  • No power supply required.
  • Meets IEC61000-4-2 ESD protection for USB port.
  • Available in enclosure or as PCB only.

Specifications, ADU218  USB Relay I/O Interface

Supply Voltage NONE ( Bus Powered )
Supply Current ( Relays De-energized )

Supply Current ( All Relays Energized )

12mA Typical  15mA Max

85mA Typical 95mA Max

Operating Temperature 0-50C
SSR  Outputs ( 8)
Type PhotoMOS - Normally Open
AC Ratings 1.0 Amps @ 120VAC MAX
DC Ratings 1.0 Amps @ 120VDC MAX
Relay Approvals UL, CSA,TUV
Digital Inputs (8)  ( TTL or Contact Input )
Vin HIGH ( MAX ) 28VDC
Vin HIGH  ( MIN )  2.0VDC
Vin LOW ( MAX ) 0.7 VDC
Vin LOW ( MIN )  0VDC
Event Counter ( 8 )
Resolution 16-bit
Input Type Contact, TTL Voltage or up to 24VDC
Input Z 2700 ohms
Max Frequency 1Khz
Programmable De-bounce 10ms, 1ms, 100us, NONE
Special Functions
Mounting Options Desktop, Velcro, Flange, DIN Rail

Pricing,  ADU218  USB Relay I/O Interface ( Includes 10' USB cable )

Description $US
ADU218 $225.00
ADU218 QTY 5-9 $210.00
ADU218 QTY 10+ $199.00

IMPORTANT: Specify mounting option when ordering. Options include the following;  DESKTOP (Standard ) -VELCRO, -FLANGE or DIN .         See Mounting Options for details.

Example 1:  ADU200-DINExample : 2    ADU218-FLANGE

ADU products do not ship with drivers on floppy or CD-ROM. Drivers, including complete SDK can be downloaded or viewed on-line in the Programming Section.

Pricing indicated is for ADU218 USB interface in enclosure and includes rubber feet for desktop use. Contact Ontrak for available options.

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Contact Information
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Ontrak Control Systems Inc.
764 Notre Dame Ave., Unit #1
Tel: (705) 671-2652 General Information Sales or Support
Sudbury,Ontario Fax:(705) 671-6127
CANADA P3A 2T2    
Next-Day shipping anywhere in Continental U.S. via Fed-Ex
Copyright 2012 ONTRAK CONTROL SYSTEMS 764 Notre Dame Ave, Unit #1 , Sudbury, Ontario, CANADA P3A 2T2  
"Quality serial Data Acquisition Interfaces"           PH. (705) 671-2652 FAX (705) 671-6127