Tenders for Supply of Universal Plug-In-Type Ac Lamp Proving Relay 110V Ac, Metal To Carbon Contact 4F.4B, Style Qecx As Per Specification No. Brs:941A & Sts/E/Relays/Ac Lit Led Signal/09-2002 Amdt.1 Or Latest With Plug Board, Retaining Clip Interlocking Pin Code Abdhk.