Millisecond accurate USB response box key features
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It doesn't matter which experiment generator you use to run your computer-based Psychology experiments the Black Box ToolKit USB response box helps improve your millisecond response time accuracy.

Simply plug in to a USB port on your PC/Mac/Linux system and our response box will appear as a second keyboard. Press an external button or other push-to-make switch and a standard keystroke will be sent to your experiment. No need for drivers, no need to recode! Works out of the box with E-Prime, SuperLab, Presentation, Inquisit, PsychoPy or any other software that can accept standard keyboard responses.

The K-RB1-4 response box is intended for custom applications where up to four high quality push-to-make buttons can be connected via 3.5mm jacks* Now includes a TTL out socket for use with a BBTK v2.

High accuracy, low variability
To measure a real world RT of 300ms accurately you need all components of your system to be functioning optimally. We guarantee that the variability of our response devices is as low as possible compared with any other alternative. For example a typical keyboard and mouse have a much greater level of inaccuracy and variability (in this example 340ms and +/- 27ms).

Remember although our USB response boxes are millisecond accurate and help reduce RT variability in your experiments they can't automatically correct for any mistimings that are inherent within the experiment generator you use.

If you wish to check the accuracy and consistency of your experiment generator, or system as a whole, you are advised to use a Black Box ToolKit v2 together with a BBTK USB response box and high quality external buttons.

All response boxes ship with a USB host lead and standard TTL lead. *Piko buttons available separately.

Key features Technical specifications Pricing Config software  
Key features
  • Four port millisecond accurate response box
  • Works with any high quality push-to-make buttons (not supplied)
  • Full-speed USB 2.0 (compatible with USB 3.0)
  • Supplied with 1.8m USB A/B cable
  • Appears as second standard HID compliant keyboard
  • Fully Plug and Play
  • Windows/Mac/Linux compatible
  • Sends standard keystrokes when a button(s) is pressed, e.g. d, k, [enter], [space]
  • Reliably detects button presses in millionths of a second
  • Registers button presses and sends keystrokes in under one millisecond*
  • Field updatable firmware


Unless otherwise labelled, all products offered for sale by The Black Box ToolKit Ltd are for academic study and/or research use only.