Supported Model:

TSP100IV TSP100IV SK TSP100IIIW TSP100IIILAN TSP100IIIBI TSP100IIIU MCP31L MCP31LB MCP31CI MCP31CBI MCP31C MCP31CB MCP30 MCP21LB MCP20B MCP20 MCL32CI MCL32CBI POP10 POP10CI POP10CBI TSP650II TSP650IISK TSP700II TSP800II BSC10II SP700 SM-S210i(StarPRNT) SM-S210i(ESC/POS) SM-S230i(StarPRNT) SM-S230i(ESC/POS) SM-T300i(StarPRNT) SM-T300i(ESC/POS) SM-T400i(StarPRNT) SM-T400i(ESC/POS) SM-L200 SM-L300

Added in Version 2.3.0

printUnitOpen

Print unit open/close status

printUnitOpen: Bool?

Return value
True if the printer unit is open. False if the printer unit is closed.	Bool?