• The Freeze Miser® operates like the thermostat in your home.
• After installation, it senses the internal water temperature arriving at the faucet, not the air temperature.
• The Freeze Miser® activates when the water temperature drops below 37º F/3º C.
• No water is released until the activation temperature is sensed.
• The Freeze Miser® is on guard 24/7 

Two Brand new shipped free.