The Reef Octopus Octopus Cleaner 220 with Float Switch Port is the same automated neck cleaner as the standard 220 model, with an added port for wiring in a float switch for safety monitoring. Twin squeegees on a high-torque, low-RPM motor keep the neck free of the buildup that restricts skimmate collection. Fits: Reef Octopus skimmers with a 220-size neck Added feature: dedicated float switch port for integrating overflow/safety monitoring into your setup Setup: plug into a timer or aquarium controller (not included), set to run a few minutes 4-6 times per day Important: not ozone safe Choose this version over the standard Octopus Cleaner 220 if you want the option to integrate a float switch into your system's safety monitoring.Compatible with: Reef Octopus skimmers with a 220 neck.