If using water only, the wiper on the Exsite may take more than 10-12 wipes to get the water off of the glass; depending on temperature and humidity
Pelco Cameras, Pelco Video Management
The wiper on the Exsite will take multiple wipes to clean the water off. This is due to the way the wiper has to go over the glass, that has a slight recess due to manufacturing processes.
If you use water and a washer solution such as Windex or Rain-x it takes about half as many wipes as compared to using water only. This is because the solution changes the viscosity and prevents bubbles of water from forming again after a wipe.