The "IC Alarm 400" module is designed to convert up to four low-voltage signals to the Digital Strom system. This means that 4 window contacts, broken glass or water sensors can be wired (closed-circuit principle) The "IC Alarm 400" module is designed to convert up to four low-voltage signals to the digitalSTROM system. This allows 4 window contacts, broken glass or water sensors to be monitored by wire. The 12 volt DC line voltage is generated in the module itself. Installation is in a standard flush-mounted box. The integrated technology of the SW-SKM300 terminal translates the states of the four lines into the Digital Strom system. Thus, each contact / sensor can be given an exact local assignment. The product is dS ready.