Blue Penguin Freeze Miser Outdoor Faucet Freeze Protection - 1 Each - 1.25 In. x 1.25 In. x 3.5 In.
$43.50
The Freeze Miser is threaded to an outdoor faucet by hand and operates like a thermostat - it senses the internal water temperature arriving to an outdoor faucet (not the air temperature). Activates when the water temperature hits 37 F.