The ZED2 and the ZED mini have no official IP rating. However, even if there is no official IP rating, the camera is designed to resist rain, water spray, and dust.
Although we don't recommend submerging it in water, the camera should be able to withstand normal weather conditions. In order to protect the camera, we suggest adding tape between the back of the camera and the main aluminum case. You can also add tape between the front plastic cover and the main aluminum case.
You can check out the new IP66/67 rated camera, the ZED2i for more robust, outdoor, and industrial use