Electronic Specialties 193 Black 2.5" x 5" 12/24V Diagnostic Relay Buddy Pro Test Kit Tests 5 different relays, both 12V and 24V and 3 diagnostic trouble codes help define the cause of the bad relay Kit Includes 5 Relay Adapters and blow mold case Quick off-the-car relay tester Checks relay coil & switch contacts Fails bad relays - Good/Bad indication, green light for PASS, red light for FAIL with flashing trouble code Tests 5 different relays, both 12V and 24V 3 diagnostic trouble codes help define the cause of the bad relay #193 Kit Includes 5 Relay Adapters and blow mold case Quick off-the-car relay tester - checks relay coil & switch contacts Fails bad relays - Good/Bad indication, green light for PASS, red light for FAIL with flashing trouble code