The AG-4000 Series are complete condensate management systems for our Goliath Series Secondary Drain Pans, Goliath Furnace Series Secondary Drain Pans, Goliath Value Series Secondary Drain Pans, and Titan Flexible Series Secondary Drain Pans. Series are available with optional AG-GFR Vibration Isolators to quiet any noisy HVAC or furnace unit in addition to their condensate overflow switch and 3/4 inch PVC threaded male pipe adapter with rubber gasket. They can also be combined with our AG-9100 External Audible & Visual Remote Alarm, which can be conveniently located over 250 feet away from the condensate overflow switch and secondary drain pan. AquaGuard® Primary Pan Sensor, 24 V AC, 5 A, For Use With: Goliath Furnace, Goliath Value Series and Titan Drain Pan, Import