Description
The Medical ECG/EKG/EMG Sensor Cable is a 3-conductor biomedical lead wire designed to connect disposable surface electrode pads to ECG, EKG, or EMG monitoring equipment. One end features a standard 3.5mm audio jack (male plug), while the other end terminates in three snap connectors that attach to gel electrode pads .
The cable is constructed with silicone rubber insulation and shielding to reduce electromagnetic interference, which is essential for low-amplitude biopotential signals . The three leads are typically color-coded (e.g., red, white/blue, black) to correspond to the standard RA (Right Arm), LA (Left Arm), and RL (Right Leg) electrode placements. For EMG applications, the same three leads connect to two active electrodes on the muscle belly and one reference electrode on a bony area.
This cable is commonly used with AD8232-based ECG modules, Olimex SHIELD-EKG-EMG, and MyoWare/EMG sensor boards that accept a 3.5mm jack input . It is a consumable accessory—the cable itself is reusable, but the electrode pads it connects to are single-use.
Critical limitations: This is not a medical device and is not certified for clinical diagnostic use. The cable is not waterproof and should not be immersed. Electrode pads are not included in most listings—verify with your supplier . The 3.5mm jack pinout must match your specific monitoring device; incorrect wiring can result in unusable or inverted signals .
Features
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3-Conductor Lead Set: Connects three electrode pads to a single 3.5mm jack input.
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Shielded Silicone Construction: Reduces electromagnetic interference for cleaner biopotential signals .
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Snap Connectors: Standard 3.2–4mm snap receptacles compatible with disposable gel electrodes .
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3.5mm Audio Jack: Standard TRS connector compatible with AD8232, Olimex EKG/EMG shields, and other biopotential modules .
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Color-Coded Leads: Typically red, white/blue, and black for RA/LA/RL identification.
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Flexible and Durable: Silicone insulation resists cracking and withstands repeated use.
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Reusable Cable: The lead wire is reusable; only the electrode pads are disposable.
Technical Specifications
| Parameter | Specification (typical) |
|---|---|
| Cable Type | 3-conductor shielded biomedical lead wire |
| Connector (Device End) | 3.5mm TRS audio jack (male) |
| Connector (Electrode End) | 3× snap receptacles (3.2–4mm) |
| Cable Length | ~80cm–1m (varies by supplier) |
| Insulation Material | Silicone rubber |
| Shielding | Yes |
| Color Coding | Red, White/Blue, Black (varies) |
| Compatibility | AD8232, Olimex SHIELD-EKG-EMG, MyoWare, generic 3.5mm biopotential modules |
| Electrode Pads | Not included |
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