1670Continuity Tester


1. For automotive, marine, aircraft and home appliances.
2. Detect open circuit in fuses, diodes, switches, sockets and wires.


  • With CE Approval.
  • Use with power off.
  • Extra long 48-inch lead.
  • Requires one AA 1.5V battery (not included).


  • Attach or press the alligator clip of the tester to one end of the component.
  • If the bulb glows, the component is functioning properly.  If not, replace the component.
  • Do not use this tester for cables with built in resistance, such as spark plug and appliance electric coil.