Freeze Miser Plastic Faucet Cover Protector

Outdoor Faucet Freeze Protector: Protects faucets, hoses up to 150 ft. animal waterers, water wells, Rvs, backflow valves, etc. in the most extreme freezing conditions. Uses No Batteries or Electrcity. Activates when water temperature falls below 37º F and starts to release the exact amount of water to keep it at 37º F. Self regulating. No more insulating pipes or draining hoses.