New digital technology. 5 years tested new sensor built-in technology, designed and developed by our R&D team, The sealed detecting sensors are never in contact with water, thus assuring a high corrosion strength, without being affected by oil or foreign discards. LAGUNA SWITCH activates at a 50 mm (2”) fluid level and deactivates at a 20 mm (3/4”) fluid range. A five-second delay prevents false starts. LAGUNA switch is rated to handle all submersible pumps up to 20 amps at 12 or 24 volts. CD. 8500000107 12-24 V.