Part # 178PA28A
Intermatic freeze protect probe for PE153 Series Digital Timers.
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Add the Intermatic Freeze or Air Temperature Sensor 178PA28A to installations where below-freezing outdoor temperatures are a concern. The sensor is designed to protect the pool and spa equipment and plumbing against freeze damage. The sensor plugs into the circuit board on the back of the P1353ME and turns ON the filter pump when air temperature drops below the programmed temperature. The freeze programming mode will not appear unless the sensor is plugged into the clock.