●The controller has a built-in current limiting system: When the load exceeds 140KG/308LB or obstacles get stuck, the controller automatically disconnects the circuit to protect the motor from damage ●Working load capacity: 136KG/300LB, maximum static load 140KG/308LB. Do not set a current exceeding 4A, as operating under overload can easily deform the bracket ●The controller can use remote control, button control, extension cable manual control, and WIFI control ●Warranty: Within 180 days, if the motor is damaged, we will provide free replacement of the motor ●The motor cannot run at full load for a long time. After running for a period of time, it needs to rest and allow the motor to dissipate heat ●The controller and manual controller have been wired