Thank you for your interest and support in our products. In order to provide products with better service, quality and faster delivery, some specifications are modified. The changes are as follows. Modified Product: Linear Actuator Modified Models: LAK2J Series Controller Modification Details: Emergency switch bottom type will be modified. Total height will be changed from 112.5mm to 104.9mm. Before Modification After Modification Dimensions Before Modification After Modification Appearance Remarks: Original emergency switch bottom is phased out, so the new type is the successor to replace the original one. Modification of emergency switch bottom does not affect the installation, function and features of linear actuator and controller. Effective Date of Modification : Jun. 1, 2021 Yours sincerely HIWIN Mikrosystem Corp.