Supply Of Relay Ac Immune, Plug In Type, Style Qna1 Dc Neutral Line 24V 8F/8B Conta Cts Front & Back Contacts Metal To Carbon With Plug Board Retaining Clip & Connectors Confirming To Br S: 931A, Irs:S60, Irs:S34 & Irs:S23 ( As Applicable). The Interlocking Code For This Unit Shall Be Abdf H. [ Warranty Period: 30 Months After The Date Of Delivery ] ]