This ignition timing machine is suitable for automobiles, motorcycles, and all two-stroke or four-stroke gasoline engines. It features an impact-resistant ABS shell and operates at 12V. It can detect car knock suppression control systems and vacuum advanced angle control systems.Features: Re-timing design helps optimize car ignition performance. Suitable for cars, agricultural, and marine engines; compatible with 12V ignition systems. Impact-resistant ABS housing. Focused lens provides clear visibility of timing marks. Detachable clamp-on inductive pickup for secure and easy connection. Ergonomically designed handle for comfortable use. Durable materials for reliable and convenient operation. Solid-state burnout-proof polarity protection with reverse polarity and overload protection.Specifications: Material: ABS Model: ZC100 Color: Red Input Voltage: 12V Working Temperature: 0-40C Trigger Point: No.1 Cylinder High-Voltage Spark Plug Speed Range: 200-10000 r/min Package Size: 25 x 12 x 5 cmNotes: 1. Power supply required: 12V. 2. Connection: Red wire to positive (+), Black wire to negative (-). 3. Sensor clip must be installed with the arrow pointing toward the spark plug.Package List: 1 x Inductive Ignition Timing Light