Base for wall and ceiling mounting in dry rooms. The bayonet socket of the socket series 143 ensures easy installation and guarantees a secure connection to the detector. For reliable electrical connection with the detector, the sockets have contact springs that encompass the connection pins of the detector from both sides. Terminal 6 of the socket has no connection to the detector and is intended as a support terminal in the socket. Design: mounting base for wall installation. Material: white plastic similar to RAL 9010. Type: 143 W. Contents: 1.