OTIS Test Tool GAA21750S2Type:GAA21750S2OTIS ELEVATOR TEST TOOL GAA21750S2Feature:1,Suit all type of otis lift model which produce before 2008 year2,no times limited MCS110-120-220-311-312-321-411-413-416-LBIIDCSS4-DCSS5-DCSS6-AT20 0VF10-OVF20 –CRO-CRC GEN2 (prodduced before 2008 year) 506NCE-513-516-606NCT-610 SIWI INVERTER GECB BOARD (but can not amend this board parameter)OTIS Test Tool GAA21750AK2