Impulse Bluetooth Access Switch - computer access for disabled


Impulse No Longer Available

Important Note:
April 11, 2011

We're sorry to inform you that the Impulse Bluetooth Access Switch is no longer available. We are not able to accept further orders for the product. As an alternative, we recommend considering the TrackerPro hands-free mouse for computer access.

More information on TrackerPro is available here.

Click here for AbleNet's complete line of switch access products.
Click here for AbleNet's complete line of computer access products.

In an effort to assist those who may still need to access EMG-based technology, we wanted to make you aware of a Canadian group at the University of Victoria (“CanAssist”) that has developed an EMG technology and, in some cases, is willing to provide this system to end users. For more information, please visit us at

Impulse is an EMG (Electromyography) sensing electrode that senses tiny muscle contractions. Using its patented technology, the Impulse detects and wirelessly transmits the EMG signal to a computer using Bluetooth wireless technology. (A Bluetooth receiver is included.) Impulse's software then processes the activity as a traditional switch "click". Pairing the Impulse with popular accessibility programs such as EZ-Keys allows users to fully control their computer with the smallest of muscle activity.


Product Features:

  • Allows user to completely control their computer using any muscle with voluntary control when used in conjunction with augmentative and alternative communication (AAC) systems.
  • Wireless connectivity allows your caregivers to attend to your needs without being hampered by wires or disturbing switch alignment.
  • Wireless connectivity allows you to remain connected to the computer even while being transported short distances (such as to the bathroom).
  • Bluetooth Class II connectivity up to 10 M (30 feet)!
  • No wires means the Impulse looks better cosmetically than many other similar switches available today.
  • Wireless Active Electrode design gives Impulse ultra clean EMG signals and greatly reduces interference.
  • Incredibly fast response time (<30 ms).
  • Integrated with major Speech Generation System Providers. 





Additional Information

Computer Access Brochure

Download our Computer Access Brochure now (PDF)


Impulse Documentation

Download Impulse Data Sheet

Download Impulse Manual

Download A4 Impulse Manual

Visit our Knowledge Base for additional product information

* This is a 180 MB file and may take considerable time to download. To have a flash drive containing the files sent to you please contact technical support at or 800-322-0956.

Frequently Asked Questions

1) How can I ensure a good skin-to-disposable electrode connection?
There are several key points to remember for a good connection: Fresh Electrodes - Never try to re-use an electrode. Disposable electrodes are designed for one-time use and may be worn as long as comfortable. Site Preparation –especially important for usesr who might have weak EMG. The area must be cleaned and lightly rubbed with an alcohol swab before placing the electrode. Any area more than slightly hairy should be shaved first. This not only will help ensure a good connection but also avoids ripping out hairs when the electrode is removed. Often what LOOKS like a good connection can actually be a bad connection if the site is not prepped correctly. After a short time with the device you should be able to look at the signal and determine if there is a problem with the connection. When there is a good connection and the user is not contracting and the raw EMG signal should be almost flat lined. Stabilization - Connections can stabilize with time. An initially bad connection will often stabilize after a while. This fluctuation can be mitigated by carefully preparing the site as described above.

2) Can I use the same electrode on different people?
No. The electrodes are designed for one-time use. Trying to re-use an electrode will likely result in a bad skin-to-electrode contact.

3) How often to the disposable electrodes need to be replaced?
Once the electrode is attached to the user, it can be used as long as the patient feels like wearing it. Usually one electrode per day is used.

4) Why does my Impulse sensor blink red and blue rapidly when I try to turn it on?
You have accidentally placed your Impulse into pairing mode. When the Impulse switch is Off, holding the connection button down for 3 seconds turns the switch on. Holding the connection button down for 8 seconds (an additional 5 seconds past the on condition) put the switch into pairing mode, signified by the blinking red and blue lights. To exit pairing mode, simply turn the switch off (hold connection button for at least 3 seconds) to exit pairing mode and start again.

5) Can I use the Impulse while the sensor is plugged in/charging?
No. Although the sensor will still transmit while plugged in, the interference from the power supply will overwhelm the EMG signal. Please do not try to use while plugged in.



Do You Have a Story to Share?

Submit Your Story Here

Click Here





Contact Us


Contact Us