Pentair 520555 IntelliChlor IC40 Salt Chlorine Generator Cell (US Version) br click here to buy Automatic shut-off feature protects the unit and prolongs cell life under low water temperature conditions br Fits Pentair Compool to EasyTouch Upgrade automation br On-time cycling prevents calcium and scale build-up to maximize cell life br Ability to communicate with IntelliTouch EasyTouch and SunTouch automation systems br Certified to UL 1081 standard for safety NSF approved Measures 7-inch length by 7-inch height by 17-inch width br Easy-to-view displays enable fast checking of salt levels cell cleanliness sanitizer output and water flow