OTIS GAA21750AK3 Test ToolBrand: OTIS Model No.: GAA21750AK3 *The option "Original OTIS GAA21750AK3" with TT logo and part number printed. Only sold in the whole pack of Test Tool+SIEI Connector+Instruction Book. The OTIS GAA21750AK3 Test Tool is an efficient tool to configure, adjust, and test OTIS elevator PCB boards (such as LCB II, LCB IIC etc.). It provides reliable results, with accurate readings and control parameters. The tool is designed to work with the OTIS brand
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