Hayward CAX-20206 Float Style Flow Monitoring Sensor Replacement for Hayward Cat 1000 Commercial Automated Controller Monitors Flow, float style monitoring replacement sensor Fits hayward cat 1000 automated controller monitor models cat-1000-co2, cat-1000-co2-ul, cat-1000-orp, cat-1000-orp-ul, cat-1000-ph Also fits hayward cat 1000 automated controller monitor models cat-1000-ph-ul, cat-1000-ptc, cat-1000-ptc-ul, cat-1000orpptc, cat1000orpptcul Weighs 0.2 pounds