Yes, you can place the camera on the inside of a window to look outside of your home. However, when the night vision is active, the IR light will reflect off the window and blur your camera's video feed. In order to avoid this, you will need to turn off the night-vision for your Funlux device. To do this you first need to access the Device Settings for your camera, open the Night Vision settings menu, and select the "Always Off" option.

You may need to install a separate IR light outside of your home in order to make the area visible at night.