The Briidea Hi-Low Pump Controller is a universal, electronic dual-float switch that works with all types of sump pumps and utility pumps. Unlike other dual-float switches that run each cycle for a fixed amount of time, the Pump Controller's two sensors make it highly adjustable, giving the user complete control of where the pump turns on and turns off—Anywhere from a 1/2 inch to 12 feet! In certain utility pump applications, this precise control feature can allow for the turn on level to be set as low as 1/2” of water, and the turn off level as low as 1/4” of water. When used with a sump pump, the user can decrease how often the pump turns on/off by adjusting the sensors in order to achieve the longest run-time for the pump. This helps to save energy and maximize the pump’s service life. No moving parts ensure reliability. Sensors work in water with debris or high mineral content (Special installation required, see Special Installation Instructions) and do not need cleaning. Heavy-duty switch that is rated for 1HP, 16amps. Versatile product that can be used in hydroponics, aquariums, rain harvesting, etc. A good ground reference is required for proper operation. How It Works The setting of the sensors determine when the control module turns the pump on, and when it turns it off. Following the sequence below, the operation is as follows: 1. When the water is below both sensors, the pump is off. 2. The pump is off when the water is above the Low Sensor, but hasn't reached the High Sensor. 3. When the water reaches the High Sensor, the pump is turned on. 4. The pump stays on while the water is between the sensors. 5. The pump is turned off when the water drops below the Black Low Sensor. Product Specifications *Output Rating: 120V/220V AC, 16Amp, (<1Hp) *Power:120V/220V AC, 50/60Hz *Cable Length:16ft