1. First, fix the camera and use the expansion screw that comes with YTV9 to find the fixed position. If the wall is too high, you can use a ladder and a screwdriver to fix the wall. If the wall panel is too hard and needs to be drilled, an electric hammer is needed to drill holes. Then tighten the expansion screw.
2. The second issue is related to wiring and power supply. Generally, cameras require power supply. Connect the camera power cord, wireless network, and follow the instructions to connect to the wireless network before use.