LEFT camera rotation means the mount can be installed either on the left or right side of the door and rotates the doorbell to its left. RIGHT means the doorbell rotates to its right. For example, if you choose a left camera rotation, when installed on the right side of the door (standing outside looking in), the doorbell points away from the door. When installed on the left side of the door, it points toward the door. Vice versa, when you choose a right camera rotation, when installed on the right side of the door, it points toward the door and away from the door if installed on the left side.
The angle is how much the doorbell rotates and you can choose from None, 5º to 60º or anywhere in between (select Custom). If you need a custom angle, please send us a message after placing your order. We will make one to meet your specific needs.