Copper material card sensing Lock

1. In normal conditions, press the button "doorbell" of touch screen to trigger the bell and alert the guest that there is so waiting at the door. 2. The guests press the app "do not disturb", touch screen's "do not disturb " sign back light was lit. The display outdoor prompts "please do not bother, " At the time being, the doorbell button does not work, the doorbell outside the wall does not work either. 3. When the app "please clean" was press