McDonnell & Miller PS-852-24 Electric Low Water Cut-Off

This McDonnell Electrical Low Water Cut-Off system is used for residential, commercial and industrial applications. It contains a manual reset and has user-friendly diagnostic with red low water and shorted probe LED. Also a green power and test LED with a higher probe sensitivity: 7,000 ohms. There is no lock out with loss of power if probe is in water or any blow down of control required when mounted directly into boiler tappings. The test button is standard on all models. The power consumption is 1.7VA with a maximum ambient temperature 120°F. The sensitivity is 7000 ohms.