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The EEG-Z improves the quality of EEG recordings with high quality, low impedance electrode connections. It takes the guess work out of impedence testing. The software allows user defined sensitivity ranges for impedence testing and graphical display shows clearly when a connection is not good. The EEG-Z checks impedence for the ten seconds after it is turned on and then changes to regular EEG mode for recording. This means that there is no need to plug the and unplug the electrodes from the sensor. The impedance check is performed directly inside the sensor for all three leads at the same time and Windows based E-Z Connect software gives a color coded quick reference diagram during impedence testing. The EEG-Z includes user-adjustable sensitivity range settings for optimal customization.

EEG-Z Sensor Specifications (SA9305Z)
Size (Approx.) - 37mm x 37mm x 12mm (1.45" x 1.45" x 0.45")
Weight (approx.) - 25g (1oz)
Input Impedance - 10GΩ in parallel with 10pF
Signal Input Range - 0 –200μV
Sensitivity - <0.1μVRMS
CMRR - >130dB
Channel Bandwidth - 2Hz – 1kHz
Accuracy - ±0.3μVRMS, ±5% of reading @10°C to 40°C

You can see all the biofeedback sensors including EEG Flex/Pro.

USA Federal law restricts this device to sale by or on the order of a physician or any other practitioner licensed by the law of the state in which he or she practices to use or order the use of this device.