We’re thrilled to add Greentek’s Gelfree BCI Cap Kit to the OpenBCI Store. Greentek Sensor is an industry-respected specialist in custom, innovative products for bio-data acquisition and research. This new addition offers research-grade EEG measurements with saline-based electrodes. The Gelfree BCI Cap Kit can be paired with the OpenBCI Cyton or CytonDaisy AND most standard EEG amplifiers.

Note, 2x touchproof adapter cable is necessary to pair this cap with the OpenBCI CytonDaisy.

Not interested in mixing-and-matching electrodes and amplifiers? Add the complete hardware package to your cart in one-click!

This Kit Includes:

• Streamlined, comfortable cap with adjustable chinstrap
• Labelled Ag-AgCl electrodes/cables
• Measuring utensils for saline conductive solution
• Saline retaining Hydro-link conductive inserts
• Cotton swabs for scalp preparation
• Towel for mess-free clean-up

Benefits:

• Ideal for multi-subject data sessions
• High signal quality and comfort
• Suitable for sleep studies
• Compatibility with all OpenBCI boards and standard touch-proof connectors
• Compatibility with OpenBCI’s FREE open-source software
• Compatibility with most bioamplifiers
• Electrodes located and labeled using the internationally recognized 10-20 system
• Easy-to-clean mesh cap
• Adjustable chinstrap for stability and reduction in movement artifacts
• Insulated leads secured with click-in tabs
• Included velcro cable management
• Three size options, S,M, and L

The leads terminate in industry-standard 1.5mm Touch-Proof connectors and can be connected to the Cyton 8-channel or CytonDaisy 16-channel board with an electrode adapter. Please note: these items are not included in this kit!

Important Notes:

• No gel required!
• Read the Technical Specifications and Use Guide
• Be sure to choose your size from the dropdown menu! See size guide below.

Size Guide: 

Obtain the circumference using a tape measure wrapped horizontally across the widest part of your head.

• Small = 50-54cm (best for children)
• Medium = 54-58cm
• Large = 58-62cm
• If between sizes, please size down

Want to see use cases of OpenBCI hardware? Head to our keyword searchable collection of recently published, OpenBCI-based EEG, EMG, and ECG research