Otis Service Tool
OTIS TEST TOOL Blue TT GAA21750AK2
1,Suit all type of otis lift model which produce before 2008 year and most otis lift model which produced after 2008 but some otis special model which produced after 2008 year which is not sell in chinese market it may can not use.
Totally this tool is better than otis TT GAA21750S2 black color
2,compare with EUROPE type: the Europe type type need refresh on otis webiste after 200times ours no this limited it can use until the tool is broken