Electronic Specialties' Shielded Relay Adapter Kit, No. 190-4, includes three relay adapters for use with 190 Relay Buddy tester. These three adapters permit testing of shielded style relays, which could not be tested previously with the Relay Buddy. The adapter plugs into the Relay Buddy tester first, then the relay plugs into the adapter. From there, normal testing procedures can be followed.