1.One account can bind more devices. You can use the following methods to query how many smart devices are bound to your current account. For example: 1.show me how many cameras are bound to my account ? 2.How many devices are bound to my account? The device has two states: online/offline. Devices can interact with other devices only when they are online. Now you can query the status of the current device in the following ways. For example: 1.what's the status of the camera door? 2.Is camera door online? 3.Some devices support the "Pan/Tilt" function by rotating the camera to view the situation around the camera. You can control the device in the following ways. For example: 1.turn the camera door up/down/left/right 2.Rotate the camera door up/down/left/right 4.The device support motion detection, baby crying detection, sound detection and other functions. Now you can control these functions in the following ways. For example:1.turn on/off motion detection/baby crying detection/sound detection of the camera door 2.Enable/Disable motion detection/baby crying detection/sound detection of the camera door 5.It is used to introduce those features that the camera has. You can check the related introduction of the device in the following ways. For example:1.tell me the main features of the camera door 2.What's the main features of the camera door 6.Support "sleep mode" setting by click once. When the device is working in "sleep mode",video viewing and other working will be stopped until you wake up the camera next time. Now you cancontrol the device in the following ways. For example:1.turn the camera door into privacy protection mode. 2.Hide the lens of the camera door 7.When the motion detection function is working, lots of messages will be generated. You can query how many pieces of data in total by the following ways. For example:1.show me how many events does camera door have? 2.How many events are on the camera door?