What are the characteristics of the lead screw door opener?

I know there is a message for your reference. The patented product of sanhe city Dongying Industry & Trade Co., Ltd. is a large lead single groove ball screw door opener, which has the characteristics of your product. This door opener is small in size, light in weight and convenient to install. Second, the power and voltage are low, saving energy and electricity; Third, large ball lead, low noise, reduce noise pollution; Fourth, it has the functions of self-locking and manual unlocking, and has the functions of soft start, soft stop, automatic stop when encountering resistance, delayed self-closing, anti-extrusion, self-locking stop and so on; 5. Control interfaces such as remote controller, password card reader, infrared probe and keyboard can be realized.