Relay Qn1 Non-Ac Immune, Plug-In Type, Style-Neutral Line, 24 V D.C., 12F/4B Co Ntacts, Front And Back Contacts Metal-To-Carbon With Plug Board, Retaining Clip And C Onnectors Confirming To Spec. No: Brs-930 & Irs: S-23 & Irs: S-34. Interlocking Code For T His Relay Unit Shall Be Abcde. [ Warranty Period: 30 Months After The Date Of Delivery ] ]