905 Interface

In stock

Simple, yet powerful fiber optic interface for USB use

Bus-powered, supporting up to 5-button response pads

Both optical and TTL trigger inputs

Replaces the FIU-904 as our low-cost solution for fMRI response


The opto-electronic interface receives optical signals from the handheld devices in the MR suite, and converts them into electronic signals for the computer. The FIU-905 is a low-cost way to have up to 5-button responses in an easy-to-use small package.

The 905 is a USB-only device: it provides standard HID compatibility so it will work with any program.

It replaces the FIU-904 as our low-cost solution for an fMRI response system.


  • Auto-gain adapts to changing configurations and devices
  • Supports HHSC devices with 5 buttons
  • Optical triggering - no need to have your own optical-TTL converter
  • Faster - for better timing, improved responsiveness
  • Internal programs (firmware) are locally upgradeable through the USB connection
  • Aluminum enclosure 3 x 2.75 x 1 in. (7.4 x 6.5 x 2.4 cm)

User Interface

When this device is plugged in, it does its job: There's no need to configure anything. Button states and triggers are indicated with LEDs for 5 buttons).


The 905 has a single, full speed USB output.


  • An 9-way optical port connects to any HHSC button box having 5 buttons.
  • Both optical and TTL triggers can be connected, so there's no need to have a separate optical-to-TTL trigger converter box.

Response Device Compatibility

Supports our latest ("HHSC-") response devices with 5 buttons. Does not support legacy ("HH-") devices or pointing devices.

What Else is Needed

This device is normally used with an optical response device and a fiber bundle.

Need More Information?

The fORP Ordering page has more information about how to order a complete fORP system.
not magnet safe This device is not for use inside the magnet room: it contains metal and electronic components.
More Information
Price $1,395.00
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