Elevator TT Server Test Tool GAA21750AK3 Lift Operator Debugger Compatible for Otis XIZI Otis Elevators F Features: Easy to operate with a clear LCD display and clear entity buttons. Double line LCD display, key clear. Supports multiple functions such as reading parameters, setting parameters, fault codes, input/output signals, etc._x000D_ This blue test tool (T / T) is omnipotent version with unlimited times, which can check and adjust GECB data_x000D_ _x000D_ Application Models: Universal Fit for Otis and Xizi Otis Elevator Device Test_x000D_ Part Number: GAA21750AK3_x000D_ Material: plastic_x000D_ colour: blue_x000D_ _x000D_ Package Contents: _x000D_ 1 x electric tester_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_