Phoenix Contact – RIF-2-RSC-LDP-24DC/4X21/EX
 Relay Module – RIF-2-RSC-LDP-24DC/4X21/EX – 2909845; Pre-assembled relay module consisting of: relay base, function plug-in module, power contact relay, and retaining bracket, approval in accordance with ATEX/IECEx (Zone 2) and Ex Zone Class I, Div. 2, Screw connection, 4 PDTs, Input voltage: 24 V DC