Auto ignition probe is a type of inductive capacitance sensor designed to be used with an oscilloscope. The test lead has three connections: one BNC connector for oscilloscope attachment, one clip for signal pickup, and one grounding clip for high-voltage applications. Features: - Inductive capacitance sensor technology - High-quality professional high-voltage ignition probe - Test lead with three connection points: BNC connector for oscilloscope, signal pickup clip, and grounding clip - Integrated attenuator for high-voltage to low-voltage signal conversion, protecting the oscilloscope from electrical damage Notes: 1. Do not directly clip the probe onto the spark plug. It should be attached to the insulated wire connecting the spark plug to avoid breakdown and potential shock. 2. Keep at least 2 inches away from other high-voltage sources to prevent interference. 3. HT25 lead length is 2.5 meters with an attenuation ratio of up to 10,000:1 Specifications: - Probe Quantity: 1 piece - Length: Approx. 2.45m / 8.0ft - Item Weight: 144.2g / 5.1oz - Package Size: 24.5 x 17.5 x 3cm / 9.6 x 6.9 x 1.2in - Package Weight: 151g / 5.3oz Package Includes: 1 x Auto Ignition Probe 1 x User Manual