The collective message module is able to display up to 10 input messages via a relay. The relay is activated as soon as at least one of the 10 inputs is connected to voltage. The supply voltage must be constantly present at terminals L1 - N. Several modules with the same voltage can be combined via the input / output S. As soon as one relay of the modules switches, all other relays in the modules operated in parallel are also switched., Devices can be cascaded, 10 signal inputs, connection with screw terminals