3 different specifications of relay pins (4-pin/5-pin switching)
Connect the wire to car battery and press TEST button to start the test.
Through the car battery (11V-15V) to the relay coil, the detector can properly check the relay contact function.
LED display, clear instructions, LED green light indicates normal, red light indicates relay failure.
Observes contact data, closure time, relay inertia at each test stage, etc.
Comes with rubber sleeved battery clip, safe to use
Compact size, lightweight and portable