... of a wide range of applications. A float switch is a device used to sense the level of ... liquid within a tank. The switch may actuate a pump, an indicator, an alarm, ... pumps, ponds, basement alarms, boats, air condition drain pans, pressure washers, carpet cleaning mach., reef aquarium, fluid control, ice ... 107(DC 5V,10mA)To install the float switch, please note that you will need to be ...