The AutoAqua Smart Skimmer Security stops protein skimmer overflows before they happen, using a compact optical sensor mounted in the skimmer cup to detect when it's full and cut power via a plug-and-play AC switch — no programming required. Sensor: optical, magnetically mounted, tool-free installation at your chosen level inside most skimmer cups Function: shuts off the skimmer when the cup is full, with audible and visual alarms Auto-Recovery: restarts the skimmer automatically after you empty and replace the cup — no manual reset needed Safety: auto time delay prevents false alarms from brief water fluctuations during power outages Specs: 100-240VAC input/output, 10A, max power 1100W (110VAC) / 2200W (220VAC); sensor max mounting thickness 5/16in (8mm); wet-side magnet 20mm x 17mm; 10ft cable Includes: Smart Skimmer Security device with world plug adapter.Setup is genuinely plug-and-play: plug the skimmer into the Smart AC Switch, clip the sensor to your chosen cup level, and it's active — no app, no controller programming.