Upgrade Your Entry-Level Controller OmniLT Upgrade Chip Version 2.5 21A03-1 Omni-Lt Upgrade ChIP V 2.5 Item# 1104925 Price:$39.99 Special Order More buying choices: Controls up to 26 different lights, appliances or groups; 16 via powerline carrier control modules Built-in security system protects eight zones, expandable to 24 Supports eight user codes with selectable authority levels If you have the OmniLT II Version 2.4 or older and want to expand with the OmniTouch, you'll need this upgraded firmware chip. UPB and LutronRA Upgrade EEPROM with installation instructions for Omni LT.