Water Tank Float Switches
Float Switches are what hangs down on your pump in your pump tank. As the water level rises the float that controls your pumps on off function rises as well . At a certain water height the switch will be activated normally 45 degrees turning the pump On. As the water level gets lower so does the float turning your pump off . There are 2 types of pump float switches for aerobic systems . "Mechanical" and "Mercury Activated". "Mercury Activated" is often cheaper but " Mechanical" pump float switches are more reliable and last longer.