TSTC Underground Automatic Spring is a brand-new concealed automatic swing door SPRING , included 2 installation types of overhead type and underneath type .

Underground Automatic Spring adopts concealed installation which is different from external type operator, it is also improved traditional operator structure, separating the main control system from drive system, enhancing new operator functional expansionary, and making system maintenance more convenient. At the same time protection grade gets great improvement, reaching IP67.

TSTC Underground Automatic Spring have lot of features as below .

*Multistage gear transmission, large torque output .  

*Low noise design, assure indoor running mute effect. 

*Easy installation, universal use for all spring doors.

*Waterproof design, protection grade is IP67.

*Good Reversibilit, can freely move the door bod during running, not easy to damage .  Support double linkage, single open for single door, double open for single door, single open for double doors and double open for double doors . 

*Support setting two-door synchronization and two-door asynchronous modes.

*Support connection with magnetic locks and electric plug locks. Error code indicating.

*DSP（Digital Signal Process）Control .     

TSTC underground spring had already passed strict testing for trouble free operation for 2,000,000 times. It’s more than a swing door spring, no doubt of opening a new chapter in automatic swing door industry, and bringing more convenience and freshness in modern life !