The OTC Heavy-Duty Logic Probe Tester tests voltage ground, power and frequency signals, and can be used for testing fuel injectors, solenoids, air flow meters, hall effect sensors, serial data, and more.




  • 3-26 volt testing range
  • Compatible with 6, 12 and 24v systems
  • High impedance input for computer circuits and sensors
  • Air-bag safe
  • 4m long, heavy-duty coiled lead
  • Insulated probe and clips