• This device is design to test electronic components actuate
  by magnetic field or electronic magnetic field.
• Devices like actuator, ignition coil, AC generator, indoor air blower,
  valve controller EGR (exhaust gas control), injector, spark plug,
  relay and hall effect sensor can be tested.
• With CE Approval. Positive and Negative sensor.
• Power indicator: GREEN LED.
• Power supply: 1.5 V AA x 2 pcs.
• Red LED means strong; Yellow LED means weak.
• Pull the switch to "L" sensitivity to switch on the power.
• Face the positive and negative sensor toward the relay and
  move the sensor horizontally above the relay.
• Please test the relay with both sensor sides.
• If the relay is working properly, the Sensitive Level Indicator,
  red and yellow, will flash and buzzer will buzz.

• This device is design to test electronic components actuate
  by magnetic field or electronic magnetic field.
• Devices like actuator, ignition coil, AC generator, indoor air blower,
  valve controller EGR (exhaust gas control), injector, spark plug,
  relay and hall effect sensor can be tested.
• With CE Approval. Positive and Negative sensor.
• Power indicator: GREEN LED.
• Power supply: 1.5 V AA x 2 pcs.
• Red LED means strong; Yellow LED means weak.
• Pull the switch to "L" sensitivity to switch on the power.
• Face the positive and negative sensor toward the relay and
  move the sensor horizontally above the relay.
• Please test the relay with both sensor sides.
• If the relay is working properly, the Sensitive Level Indicator,
  red and yellow, will flash and buzzer will buzz.