LX-30 eprom chip - for use with LX-30 systems, and also as a RETROFIT for use with obsolete LX-25 topside panels pictured above, in conjunction with a new LX-30 topside panel listed above. Replaces the LX-25 eprom chip on the circuit board to enable the functions and integration of the LX-30 panel. (cannot be used with a LX-25 topside panel) Suits systems with 2 spd pump 1, 2 spd pump 2 (single speed pump 2 still supported), blower, light and ozone (not for circulation pump driven heating systems) Also required as an upgrade for replacing corrupted LX - 25 eprom chips, but must also have touchpad replaced with an LX - 30 version.