System features:

Security:

The hardware adopts high-speed processor, and the safety and stability 

Signals are controlled by passive dry contact, which will never affect the original functions of the elevator and its operation safety. 

The system has the linkage function of fire protection, and the system automatically bypassing the elevator in the state of fire protection

Convenient:

System control, multi-layer button, single-layer can direct 

Building intercom linkage, the owner directly through the intercom extension to open the elevator floor to visitors 

Supporting the Nabon wechat mini program can be upgraded to two-dimensional code by taking the ladder, and can be limited by the number of times and time sharing permissions to visitors, making visits more convenient.