The Lexicomm LX228 is a self contained enclosure housing a master handset, one to four dual line cards, an EN54-4:A2 2006 power supply & battery charger and can be surface or flush mounted (Using the ViLXCBZ Bezel) The case is made from powder coated zintec, with a smoked perspex door covering the handset. 20mm cable knockouts are provided for all necessary cables as well as space for the backup 12V VRSLA battery. The master station is microprocessor controlled, but requires no programming on site; the panel is fitted with end of line resistors which are simply moved to the end of line when an outstation is connected. Lines can have an accessible toilet and Type B refuge point on the same line, as the front panel RGB indicators identify which is calling, with refuge overriding emergency assist calls as required by BS5839-9:2011.