Siemens Plug-in relay, complete unit, plug-in, 4W, 24VDCplug in relay complete unit, 4 changeover contacts, 24 V DC, LED module red, standard plug in socket screw terminal, 3. 5 mm pinning Coupling relay with plug in relay SIRIUS LZS for galvanic isolation, contact multiplication, and switching small loads and as a means of switching potential. The coupling relays feature wiring without tools and vibration proof connection thanks to push in spring loaded terminals. Bases with logical separation enable easy