Vertical Door Opening and Closing TesterI. Purpose and Features: This machine can test the durability and service life of vertical refrigerator door opening and closing. It is compatible with products such as single upper and lower door models, multi-door models, and left-right double-door upper and lower models. II. Technical Parameters:  Model: LX-5617  Load capacity: 50KG  Stations: (1-3) stations (each group can operate independently and be controlled separately)  Action stroke: 0-60mm (adjustable)  Test times: 0-999999 (can be set to stop after reaching the set times)  Action angle: 1-90 degrees  Speed adjustment: 10~60 times/min (adjustable)  Speed display: Direct display via LED digital type  Test times: 0-999999 (can be set to stop after reaching the set times)  Counting function: 8-digit counter, with settable stop function and power-off memory protection function  Transmission mode: Electric drive with imported Taiwan linear slider structure  Motion mode: Rotational motion  Fixture design: Customized according to the customer's products  Lifting function: Manual adjustment of the product height lifting platform  Overall dimensions: Customized according to the customer's products  Working power supply: 220V/50HZ  Machine weight: Approximately 40kg