Thought Technology Sensors & Accessories

Bend Sensor (T9550)

Bend sensor is small enough to be placed on fingers and wrists to monitor joint motion. 180 degrees of flexion. Use sensors back to back to get a 360 degree range.

Blood Volume Pulse (BVP) Sensor (SA9308M)

BVP sensor is a blood volume pulse detection sensor (otherwise known as a PPG sensor) housed in a small finger worn package, to measure heart rate and provide BVP amplitude, BVP waveform, HR and Heart rate variability feedback.

Length (Approx.): 20mm x 34mm x 10mm (0.72" x 1.33" x 0.41")
Weight: 20g (0.66 oz)
Input Range: Unit less quantity displayed as 0% - 100%

EEG Flex/Pro Sensor (T9305M)

A pre-amplified electroencephalograph sensor, without the built in impedance sensing of the EEG-Z.

Size (Approx.): 37mm x 37mm x 12mm(1.45" x 1.45" x 0.45")
Weight: 25g (1 oz)
Input Impedance: 1,000,000Mohms in parallel with 10pF
Input Range: 0 - 200µVRMS
Sensitivity: <0.1µVRMS
Bandwidth: 2Hz - 1kHz
CMRR: >130dB

EEG-Z Sensor (T9305Z)

EEG-Z is a pre-amplified electroencephalograph sensor with built in impedance checking. Get the ultimate hook up every time with this sensor as it monitors skin impedance (both the reactive and resistive elements) and sensor connection.

Size (Approx.): 37mm x 37mm x 12mm (1.45" x 1.45" x 0.45")
Weight (approx.): 25g (1oz)
Input Impedance: 10Gohms in parallel with 10pF
Signal Input Range: 0 - 200µV
Sensitivity: <0.1µVRMS
CMRR: >130dB
Channel Bandwidth: 2Hz - 1kHz

EEG-Z3 Sensor (T7680)

EEG-Z3 is a pre-amplified electroencephalograph sensor with built in impedance checking and 3 modes of operation: regular EEG mode (above 2 Hz), low frequency mode (above 0.01 Hz) for evoked potentials and low frequency applications and DC mode for true DC operation (above 0 Hz) for slow cortical potentials. Modes can be changed on-the-fly. Also includes DIN input connectors for use with standard EEG electrodes.

EEG Cables and Electrodes

Available in both gold and sintered silver/silver chloride, the entire line delivers high quality performance, ease-of-use and maximum flexibility. Click here to see our line of Thought Technology EEG Cables and Electrodes

EKG Sensor (T9306M)

A pre-amplified electrocardiograph sensor, for directly measuring heart electrical activity. Connects via extender cables for a single channel hook up. Bandwidth of 0.05 Hz - 1 KHz.

Size (Approx.): 37mm x 37mm x 12mm (1.45" x 1.45" x 0.45")
Weight (approx.): 25g (1oz)
Input Impedance: 1,000,000Mohms in parallel with 10pF
Signal Input Range: 0 - 12mVRMS
Sensitivity: <1µVRMS
CMRR: >130dB
Channel Bandwidth: 0.05Hz - 1kHz
Signal Output Range: 0 - 600mVRMS
Input/Output Gain: 50
Supply Voltage: 7.26V (± 0.05V)
Current Consumption: <1.5mA

EKG Wrist Straps with Artifact-Proof Algorithm

Wrist straps now available with EKG (electrocardiogram) sensor for easy and convenient wrist placement.

  • Wrist placement is faster and eliminates the problem of undressing.
  • Wrist straps with silver/silver-chloride electrodes are reusable, saving money.
  • The new advanced IBI from EKG algorithm implemented in BioGraph Infiniti 5.0 (required software) virtually eliminates movement and EMG artifacts.

With the new wrist straps added, Thought Technology now offers the most advanced and complete HRV package on the market:

  • Robust, accurate beat detection algorithm that is highly insensitive to EMG
  • EKG wrist strap electrodes that facilitates quick and easy placement
  • Unique IBI artifact rejection feature for improved HRV biofeedback - up to 180 bpm with heavy EMG for sports
  • Intelligent HRV resonant frequency detection
  • Programmable respiration pacer
  • Pulse transit time
  • Advanced and extensive HRV statistics and computations, like, pNN50, etc.

Wrist Strap kit (SA9325) includes: a pair of wrist straps, a long extender cable and 6 replaceable silver/silver-chloride electrodes. Wrist Straps are made of a medical-grade, non-latex material that is water resistant. Straps can easily be hand washed.

If you already have an EKG sensor (T9306M), you can order the EKG wrist strap kit separately.

EMG Electrodes

(A) Triode (T3402M), electrode with standard 2cm spacing of silver silver chloride electrodes, backed with nickel plated brass snaps to prevent corrosion when connected to pre-amplifiers for extended periods.
(B) UniGel electrodes (T3425), pre gelled single electrodes, or sensitive placements on dry skin.
(C) Single strip electrodes (T3404), versatile electrodes can be used as strip or separated for wider placements.

MyoScan EMG Sensor (T9503M)

A pre-amplified surface electromyography sensor used with the ProComp Infiniti channels A - B for RAW sEMG. and FlexComp Infiniti channels. Compatible with Triode electrodes or extender cables for wider placement of electrodes. Range of 0 - 2000 µV.

Size (Approx.): 37mm x 37mm x 12mm (1.45" x 1.45" x 0.45")
Weight: 15g (0.5 oz)
Input Impedance: >1012ohms in parallel with 10pF
Input Range: 0 - 2000µVRMS
Sensitivity: <0.1µVRMS
CMRR: >130dB
Channel Bandwidth: 10Hz - 1kHz
Signal Output Range: 0 - 1.0V RMS
Input / Output Gain: 500
Supply Voltage: 7.26V (± 0.02V)
Current Consumption: 0.7mA (± 0.25mA)

MyoScan-Z EMG Sensor

Designed for a sampling rate of 2048 samples per second, this new EMG sensor offers an unique impedance check mode, which can be triggered from BioGraph Infiniti software. It measures raw EMG signals with a range from 0 up to 2000 micro-Volts. MyoScan-Z makes impedance check fast, easy and reliable, and avoids risk of cable misplacement. It monitors skin impedance and sensor connection.

Benefits of impedance check:

  • Good contact between the electrodes and the skin is required to have a good quality signal and prevent artifacts.
  • Measuring the impedance between the electrodes is the recommended way to verify good contact. It is simple, fast and accurate.
  • It shows instantaneously which electrode is not properly connected or which part of the skin is not well prepared.

Impedance check is usually performed with an impedance meter. When you use a regular impedance meter, you have to:

  • interrupt the session
  • disconnect the cables
  • connect the meter to each site and measure them one by one
  • reconnect the cables (at the right place)
  • restart the session
  • And this, every time you need to verify the impedance!

With MyoScan-Z, you can get it done in 3 clicks:

  • pause the session
  • run the impedance check simultaneously on all the sites without disconnecting any cable
  • unpause the session

Also see real-time results in a glance with the color-coding:


BioGraph Infiniti - Impedance Check Screen

Thought Technology is the only manufacturer providing EMG sensors with built-in impedance check.

Size (Approx.): 37mm x 37mm x 12mm (1.45" x 1.45" x 0.45")
Weight: 15g (0.5 oz)
Input Impedance: ≥ 1012Ω in parallel with 10pF
Input Range: 0 - 2000μVRMS
Sensitivity: <0.1μVRMS
CMRR: >130dB
Channel Bandwidth: 10Hz - 1kHz
Signal Input Range: 0 - 2000 μV
Input/Output Gain: 500
Supply Voltage: 7.26V (± 0.02V)
Current Consumption: 0.7mA (± 0.25mA)
Accuracy: 0.3μVRMS Plus ±4% of reading @25°C to 30°C

For use with the ProComp/Procomp5 Infiniti channels A - B or all FlexComp-Infiniti channels.

MyoScan Pro EMG Sensor (T9401M-60 or T9401M-50)

A pre-amplified surface electromyography sensor used with the ProComp Infiniti channels C - H for RMS sEMG. Features a range switch in the sensor head to change filter settings between 0 - 400 µV Narrow filter, 0 - 400 µV Wide filter, 0 - 1600 µV Wide filter. Compatible with Triode electrodes or extender cables for wider placement of electrodes.

Size (Approx.): 37mm x 37mm x 15mm (1.45" x 1.45" x 0.60")
Weight: 25g (1 oz)
Input Impedance: 1,000,000Mohms in parallel with 10 pF
Input Range: 0 - 400µVRMS, 0 - 1600µVRMS
Sensitivity: <0.1µVRMS
Bandwidth: 20Hz - 500Hz

EMG Extender Cables (T8720M)

Extend the placement possibilities of the MyoScan and MyoScan Pro, sensors with the shielded, low noise extender cables.

Force Sensor Adapter / Foot Switch (T9540)

This adapter connects to third party Force sensors of varying sensitivity to measure pressure or force, such as Tekscan Flexiforce and Imaging Technologies Uniforce. It can be used to monitor tactile activity, or as a foot switch for Gait Analysis.

Sensor Resistive Range: 1Kohm - 1.4Mohm (native Infiniti modes)
Output Voltage Transfer Function: V out = [301Kohm/(Rfs +575Kohm)] * Vs, where Rfs is the resistance of force sensor in Kohm
Supply Voltage: (Vs) = 7.26V
Current Consumption: < 1mA @ 7.26V nominal
Resistance to Voltage Accuracy: ±1%
Length: ~152cm (60")
Weight: ~10g

ForceTrac (7640)

ForceTrac is a highly sensitive and accurate sensor capable of monitoring anyforce perpendicular to its surface through one of 3 attachments.

When used with its rod attachment, ForceTrac can be used as an algometer to provide objective pain sensitivity ratings in patients presenting with pain. ForceTrac can be used as a manual muscle tester to evaluate muscle strength in a wide variety of muscles, in strength testing and kinesiology. Two rubber-coated probes are included - a flat one, and a curved one for wrist and leg assessments.

ForceTrac provides repeatable measurement conditions for sEMG assessments, providing consistency in Median Frequency Analyses. ForceTrac works with our encoders, including: Procomp 2, ProComp 5, ProComp Infiniti, or FlexComp Infiniti, and our BioGraph Infiniti Software to provide an integrated solution to force monitoring.

Manual Muscle Algometer and ForceTrac Provides Accuracy and Repeatability in Your Measurements!

Goniometer Adapter (T9545)

This adapter connects to Biometrics' torsiometers or single and dual axis goniometers, for monitoring joint movement in multiple planes. Ideal choice for Ergonomics and Gait Analysis.

Size (approx.): 370mm x 370mm x 100mm (1.45" x 1.45" x 0.44")
Weight (approx.): 15g (0.5 oz)
Input Impedance: >1Mohm
Signal Input Range: -180° - +180° (±5 degrees of movement)
Signal Output Range: 2.200 - 3.400V
Supply Voltage: 7.26 VDC
Current Consumption: <4mA @ 7.26 VDC

InclinoTrac (T7650)

InclinoTrac is a single inclinometer that measures the inclination angle relative to the ground. InclinoTrac uses solid-state micro-machined sensors and microprocessor technology to provide rapid settling and high resolution (0.1°) and accuracy (1.0°).

Dual InclinoTrac (T7655)

Dual-InclinoTrac is a dual inclinometer that measures relative angle (between back and head, for instance). Ideal choice for Range Of Motion assessment.

Respiration Sensor (SA9311M)

An easy fitting high durability latex rubber band fixed with velcro respiration belt for monitoring respiration rate from a client. Can be worn either thoracically or abdominally, over clothing.

Size (Approx.): 132cm (52" Long)
Weight: 30g (1.0 oz)
Range: 30% - 65%

Sensor Isolator (T9405AM)

TT Sensor Isolator is a four channel optical isolator that provides isolated analog outputs to data acquisition systems from the Thought Technology sensors that make human skin contact. It is available with stripped wires at the end of the cable or BNC connectors.

Size: 5.7 x 3.6 x 1.2 in (14.5 x 9 x 3 cm)
Weight: 180g
Isolation Voltage: 4.5kVrms
Voltage Input Range: 2.8V ± 1.5V
Bandwidth: 0 - 1kHz
Voltage Output Range, normal: 2.8V ± 1.5V
Voltage Output Range (possible): 0 - 9V (connected device should tolerate this range)
Input impedance: 1.81MΩ
Output impedance: 110Ω
Accuracy: Gain: ±0.1%, Offset < 1mV
Noise: <100μV RMS
Temperature range (operating): 10 - 40 °C
Crosstalk: < -90dB or better
Power supply: Isolated area
     Examinee-applied part: 9V Alkaline battery (6LR61)
     Battery Life: 10 hours typical
     Low battery threshold: 7.25V
     Mains-connected part: 9V AC adapter

Skin Conductance Flex/Pro Sensor (SA9309M)

A sensor to measure the conductance across the skin, normally connected to the fingers or toes. Supplied with two finger bands.

Size without electrode leads (approx.): 3.5 cm (1.4")
Size with electrode leads (approx.): 15 cm (6.0")
Cable Length (approx.): 127 cm (50")
Weight (approx.): 25 g (1 oz)
Signal Input Range: 0 - 30.0 µS

Temperature Sensor (SA9310M)

A skin temperature sensor, measuring between 10°C - 45°C ( 50°F - 115°F ). It is supplied with a self adhering band for easy finger placement.

Length (Approx.): 152cm (60")
Weight: 10g (0.33oz)
Temperature Range: 10°C - 45°C (50°F - 115°F)
Accuracy: ±1.0°C (±1.8°F) 20°C - 40°C (68°F - 104°F)

TT AV-Sync (T7670)

TT AV-Sync is a highly accurate time-synchronizing device for making measurements of audio and video events produced by a PC. AV Sync is used in evoked and slow cortical potential protocols, and reaction time testing to provide the ability to make measurements with millisecond accuracy.

Voltage Isolator

Size (Approx.): 95mm x 57mm x 32mm (3.75" x 2.25" x 1.25")
Weight: 55g (2 oz)
Input Impedance: 1Mohm
Input Range: 0 - 200mV, 0 - 2V, 1.952V - 3.648V
Bandwidth: 0Hz - 40Hz