General description Hand-held Coil On Plug fast ignition tester, battery powered, with stable and professional performance. Designed to easily and quickly determine whether the COP produces the proper spark for the plug. It works by receiving the signal from the secondary ignition coil, providing accurate and reliable test results. Technical specifications Item Type: Ignition Coil Tester Material: ABS Measurement allowed error: +/- 1-3 cm Usage Correctly connect the connector and sensor head to the tester. Align the induction head with the ignition coil to start working, and judge the working status of the ignition coil based on the lighting result. Test Results: Red LED Light indicates the COP is producing the correct amount of voltage with consistent, steady flashing and beeping. No response or inconsistent response indicates the COP is NOT producing the correct amount of voltage. Green LED light indicates the duration of the arc is correct with consistent and steady flashing. No