Hello, we selected your company product of FC-198E access controller. We all are busy in the office, and the visitors press the button in he FC-198E access controller, and the doorbell has not react. How to solve this problem?

Hello, our company FC-198E access controller supports the function of doorbell, but the doorbell need to connect externally. FC-198E access controller itself only has a doorbell button instead of a doorbell. It is recommended that when purchasing the equipment, the doorbell should be purchased together with the doorbell so that it can achieve the function of doorbell.