Tin Disc Cup Electrode

Single pure-tin disc cup ear electrode with 48" lead wire and 1.5 mm DIN plug, designed to work with any Electro-Caps or other tin-ear EEG systems needing a dependable reference channel.

The Tin Disc Cup Electrode (E21-9S) is a single pure-tin EEG cup electrode on a 48" (122 cm) lead with a 1.5 mm DIN plug, built for straightforward ear/reference connections in clinical and research setups. It is compatible with any size Electro-Cap, so you can drop it into your existing workflow without worrying about matching specific cap models.

9 mm tin cup electrode for simple, reliable ear references in EEG and neurofeedback. The lead is long enough to reach comfortably from ear to cap or headbox without excess slack. Sold as a single lead, it's ideal as a replacement, spare, or extra channel for specialized montages.

• Works with any size Electro-Cap for quick, drop-in ear/reference setups
• Pure-tin 9 mm cup provides a familiar contact surface for ear reference or ground positions
• 48" (122 cm) lead length gives comfortable reach from ear to cap or headbox in most EEG configurations
• 1.5 mm DIN plug connects directly to EEG systems that accept standard 1.5 mm DIN electrode inputs
• Sold as a single electrode, ideal as a replacement, spare, or dedicated extra ear lead

Technical Specifications

• Lifespan: Reusable
• Modality: EEG
• Connector Type: 1.5 mm DIN plug
• Electrode Shape: 9 mm disc cup ear electrode
• Electrode Material: Pure tin
• Length: Lead length 48" (122 cm)
• Quantity: 1 electrode per package