NOTE:1.When you connect the doorbell, if the connection is not available, please check again whether your network is 2.4G Wifi, this doorbell does not support signal frequencies other than 2.4G Wifi. If you confirm that it is 2.4G Wifi, please repeat the connection operation according to the instructions. 2.The first account can be unbound on the software after binding, and the second account can be bound only after the first account is unbound on the software.