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ADU228 USB Solid-State, 8 channel, Relay  I/O interface ( 2 amp )

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ADU228 USB Solid-State Relay I/O Interface

The ADU228 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 ADU228 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 XP, 7, 8, 10.  A mini-driver ( DLL )* is also provided allowing control using standard ASCII commands using familiar readfile , writefile commands.  The ADU228 includes a 10' USB cable and is available as a PCB or in an enclosure with several mounting options.  The ADU228 includes a 10' USB cable and a flange mount enclosure. An optional DIN rail version is available.

Click here to download ADU228 USER MANUAL in PDF Format (1.3M)

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

Key Benefits, ADU228 USB Solid-State Relay I/O Interface

  • Bus Powered, No external power supply required.
  • 8, N. O. PhotoMOS SSR outputs rated  2.0A @ 120VAC, 2.0A @ 120VDC
  • CSA/UL Approved ( EN60950-1),  CE Marked
  • High Retention USB connector.
  • 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 2500V ( 500V channel to channel )
  • Bi-colour LED status indicator.
  • High quality cage-clamp type terminal blocks.
  • Uses standard HID drivers included with Windows XP,8,10
  • Mini-driver ( DLL ) provided for use with VB,VC, LabVIEW and TestPoint
  • Programming examples and sample code included for VB, VB.NET, Visual C++
  • Meets IEC61000-4-2 ESD protection for USB port.
  • Available as standard flange mount or optional DIN rail mount.

Specifications, ADU228 USB Solid-State Relay I/O Interface  

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

Supply Current ( All Relays Energized )

12mA Typical  15mA Max

150mA Typical 170mA Max

USB Connection Type Full-speed USB 1.1
Operating Temperature 0-50C
SSR  Outputs ( 8)
Type PhotoMOS - Normally Open
AC Ratings 2.0 Amps @ 120VAC MAX
DC Ratings 2.0 Amps @ 120VDC MAX
On-state Resistance Typical 180mOhm
On-State Resistance Maximum 350mOhm
Maximum Operating Speed 1CPS at full load
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,  ADU228  USB Relay I/O Interface ( Includes 10' USB cable )

Description $US
ADU228 $245.00
ADU228 QTY 5-9 $225.00
ADU228 QTY 10+ $210.00

IMPORTANT: Specify mounting option when ordering. Options include the following; FLANGE (Standard ) or, -DIN (optional) .         See Mounting Options for details. ADU228-DIN adds $5 to unit price.

Optional :  ADU DIN MountADU FLANGE Mount

Drivers, including complete SDK can be downloaded or viewed on-line in the Programming Section.

Pricing indicated is for ADU228 USB interface in desk mount enclosure. Contact Ontrak for available options.

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Contact Information
Address Telephone Electronic Mail
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