GSR Biofeedback Monitor / Meter

GSR Monitor / Meter: What is it and How does it Work

The Biofeedback Monitor / Meter was designed primarily for hypnotherapists and psychotherapists. The unit measures galvanic skin response, giving almost instant feedback of a client's general level of relaxation and immediate emotional reactions. Use of modern microprocessor technology has enabled the production of a highly accurate device at a very reasonable cost.

Biofeedback Monitor / GSR Meter: Buy Now Biofeedback Monitor / GSR Meter: Buy Now


The Biofeedback Monitor / GSR Meter costs just £134.99 GBP Plus:

• £5.00 GBP P+P for UK (1st class post, recorded delivery)
• £12.00 GBP P+P for Europe (airmail, recorded delivery)
• £16.00 GBP P+P outside of Mainland UK and Europe (airmail, recorded delivery)

UK - 139.99 GBP (P+P included):
Europe - 146.99 GBP (P+P included):
Outside UK / Europe - 150.99 GBP (P+P included):

As seen on BBC Three Television

This is an updated model of the Biofeedback Monitor / GSR Meter used in the BBC three documentary series 'The House of Tiny Tearaways'.

Customer Satisfaction Guaranteed

We guarantee customer satisfaction, so if after purchase you are not completely satisfied with your Biofeedback Monitor / GSR Meter you may return it within 21 days and receive a full refund (details in terms and conditions). We have never received a returned unit from a dissatisfied customer, which speaks volumes for the quality of the monitor itself.

The Device Itself: Theory

The Biofeedback Monitor / GSR Meter measures a client's galvanic skin response (also known as electrodermal skin response - EDR). The monitor operates by passing a small electrical current (unnoticeable to the client) through the skin from one finger electrode to the other.

The electrical conductivity of the skin is affected by fluctuations / changes in the level of salt and water in the sweat gland ducts. These changes occur almost instantaneously as a direct result of certain emotional reactions, for example if / when the 'fight or flight response' is triggered, electrical conductivity increases, and when relaxation develops again electrical conductivity decreases. The Biofeedback Monitor / GSR Meter measures and displays a client's general state of relaxation and immediate emotional reactions, level of relaxation or intensity of emotional response is indicated by the change in digital display reading.

(The Biofeedback Monitor / GSR Meter is shipped from the UK)


  • The Biofeedback Monitor / GSR Meter and sensor lead are guaranteed for 1 year against faulty parts and manufacturing faults
  • Dimensions :- 83 mm’s wide, 152 mm’s high, 39 mm’s deep. Large easy to read digital display
  • The device is switchable between 2 and 3 digit accuracy
  • Very low power consumption
  • Comfortable and unobtrusive velcro finger straps with high-conductivity copper electrodes connected to a long (1.5m) lightweight lead
  • Built-in tilt stand for convenient viewing of digital readings

Operating instructions

The sensor lead:

The velcro finger straps should be fitted securely to the client's first and second fingers. The straps should be positioned in the middle of the end section of the fingers, positioned so the copper electrodes are in good contact with the fingerprints (not the fingernails). If the finger straps are not fitted well, for example if they are too loose, or too near the tips of the fingers so the electrodes don't make good contact, then the monitor reading will tend to be too low. Either hand can be used, but it is important to continue using the same hand from session to session in order to get comparable readings. The sensor lead is included with the meter, if you require a spare lead it can be ordered below.

Spare sensor lead costs £25.00 GBP Plus:

• £1.50 GBP P+P for UK (1st class post, recorded delivery)
• £3.00 GBP P+P for outside of mainland UK (airmail, recorded delivery)

UK - 26.50 GBP (P+P included):

Outside UK - 28.00 GBP (P+P included):

The front panel:

Connect the sensor lead to the socket of the Biofeedback Monitor. The rocker switch on the left turns the meter on, and the push button on the right toggles between 2 and 3 digit mode. The first 2 digits of the monitor reading are the same in both modes - 3 digit mode simply adds more accuracy. More accuracy can be useful in seeing more quickly which direction the reading is moving in (e.g. during analysis), whereas the 2 digit mode is less distracting to read (e.g. during hypnosis).

Since the readings will vary from individual to individual regardless of their mental state (due to variations in skin type, etc.), it is a good idea to take a baseline reading from a client before any therapy is carried out, this will give you a reference to work from. It is best to take this biofeedback reading after your client has been sitting relaxed for a while. Perhaps attach the electrodes at the beginning of the initial consultation but record the reading near the end of the consultation. Typical biofeedback readings at this stage tend to be between 50 and 75.

Note that use of certain prescribed drugs or even herbal medication (anti-depressants, tranquillisers, etc.) may result in an unusually low reading from the Biofeedback Monitor. This low biofeedback reading does not matter as it is still a valid reference point. It is also worth noting that if a client is particularly hot or cold this will affect the biofeedback reading, making it higher or lower respectively. This shouldn't normally present a problem provided the environmental conditions of your treatment room don't fluctuate, and are generally consistent from one treatment to the next. In any case it is the changes in reading during a session that are of most interest.


When you have your client comfortably settled, attach the GSR Meter electrodes to their fingers. Take a note of the display reading as you begin your induction. Normally as your client enters hypnosis the biofeedback reading will fall and continue to fall as they become more and more relaxed. Occasionally a client's reading will rise even though they have entered trance, this tends to be indicative of subconscious anxiety. It is recommended to continue deepening suggestions until the biofeedback reading stops falling, or at least slows right down.


As your client begins to talk during analysis (e.g. free association, regression to cause, etc.) the biofeedback reading will tend to rise somewhat as their trance lightens. This is normal, but when they enter a 'no go' area (anxious thoughts, etc.) the reading will rise more significantly, often very quickly, even though they may appear visibly relaxed. This is the time when you may decide to gently probe. Reduced reactions in particular areas from session to session will give you good feedback of your client's improvements.


You can monitor your client's emotional reactions to your suggestions during hypnosis with the biofeedback monitor, and pace your suggestions accordingly. A good indication of progress can be made by observing your client's response to a fear or phobia both before, and then after hypnosis. Ultimately as you use the GSR Meter you will gain specific experience relevant to your particular methods of therapy and most likely you will find it an invaluable tool.

The Battery

The Biofeedback Monitor has a low power consumption. When the battery eventually runs down, the display will become fainter, may flicker or may simply not display anything. It is best to replace the battery at the first sign of it running down (i.e. the fainter display) because the readings will become slightly less accurate after a time.

Getting access to change the battery: first, unscrew the battery lid at the back of the case, then pull the battery out with one hand while holding the battery socket with the other hand. Make sure you don’t pull the cable from inside the monitor.

Please read our Terms and Conditions before purchase.