We can create contactless elevator buttons (inside the car + outside the hall) for existing elevators, or we can create contactless elevator buttons through embedded front-end cooperation. It is suitable for use in various enterprises, institutions and buildings such as hospitals, schools, residences, offices, businesses, hotels, banks, governments, etc. The system has the characteristics of high independence, easy installation, maintenance, transformation and low cost. It is safe, sensitive and efficient, and you can choose from a variety of access methods such as direct button connection and SUB-GHZ protocol.