If you immediately know where a fire is located this knowledge can save lives radio smoke detection station for radio module frm 320 75 17 68 and rm 420 75 18 07 when the smoke detector raises the alarm a radio signal is sent to the station which in turn triggers an alarm in addition the activated smoke detector is displayed by means of a signal indicator a switch contact changer is provided to forward the alarm to an alarm control unit or telephone dialling system