Hydrolevel Safgard 550P Low Water Cutoff w/ Manual Reset & Test Button/Light, Longer Probe - 120V

Automatically shuts off burner in a low water condition to prevent boiler damage. Low maintenance. No moving parts to wear stick or hang up, as in float devices. Test button (550 & 650 Series) allows the burner circuit and control to be tested without lowering the water level. Manual reset feature (550 & 750 Series) will not lock out in power failures.