Raritan Engineering’s Smart Macerator Control monitors and maintains pump motors to prevent damage. If the macerator pump doesn’t prime in seven seconds or runs dry for five seconds, it automatically shuts down. The unit continues to monitor amperage, and if there’s more than a 20A draw, it turns off. At 6.25 inches by 1.5 inches, the Smart Macerator Control fits into tight, protected spaces. It works with Raritan 53100 and 53101 macerator pumps.