Freeze Protection for All Outdoor Water Supplies. Protect faucets, hoses up to 150 ft. animal waters float valves, RV water hookups, water wells, and more. Its patented design allows the FREEZE MISER to sense the internal water temperature and releases water below 37°F. As the water temperature fluctuates, it automatically regulates the drip rate. Where as faucet covers protect the faucet,the Freeze Miser ensures reliable spigot freeze protection and also protecting the water supply line, releasing the least amount of water, even in the most extreme freezing conditions. Outdoor spigot protection 1-Simple Step: Hand-tighten the FREEZE MISER on your exterior faucet. Turn on the faucet and open it all the way to ensure the proper water pressure is available. (Minimum 10 psi). The FREEZE MISER makes outdoor freeze prevention more dependable, affordable, and water conservation a reality.