I also used Plasti Dip spray paint, but I took a slightly different tact on masking.
On the Motion Sensor, I used the small circle above the V2 camera lens as a template to cut out two small circles to use to mask the holes for the reset switch and the light. I then masked the lens and the entire backside, including the tab you use to pop off the back to replace the battery. Because they have you use the Wyze logo to physically align the sensor, I also masked over that. I don’t intend to ever uncover that; the masking will tell me where it was.
You can actually leave the two small circle masks on after you are done too. Many people have said they’d like a way to turn the light off, and even if you haven’t activated the sensor yet you can punch through the masking tape with the activation tool. However, if you keep the light covered, you won’t have it to look at when you activate. Fortunately the speaker on the camera should be enough to guide you.
You can pull the masks off anytime on anything you leave covered, that’s one of the advantages of using Plasti Dip. I decided to leave the light and switch covered on mine, and on the motion sensor I hadn’t activated yet I simply punched through the masking tape with the tool.
On the Contact Sensors I again used the small circle above the V2 camera lens as a template to cut out two small circles to use to mask those holes. I again masked the entire backside, including the tab you use to pop off the back to replace the battery.
Here is how they looked at the end: