Item # 51010http://www.doheny.com/poolsupplies/Saltron-Mini-Spa-Salt-Chlorination-System-10597.html
Saltron® MINI Spa Sanitation System is a portable chlorine generator for spas that produces a pure form of chlorine by electrolysis of salt (NaCl) in order to sanitize your spa water. After the salt is converted to chlorine and the bacteria are killed, the chlorine converts back to salt and this process is ongoing. Easy to set-up and no installation or plumbing required. Chlorine output can be easily adjusted by the timer on the power supply unit. The chlorine level in your spa can be checked by using a standard chlorine test kit. One Saltron™ MINI unit can treat up to 600 gallons (2,200L) of spa water (or up to 2000 gallons Swim Spa water). Eco-friendly and very minimal electricity required.
•For any in-ground or above ground spa or swim spa up to 2,000 gallons.
•Independent from the spa filter and pump system.
•Reverse polarity every 2-4 hours on cell.
•Comes with cell holder which conveniently gives the cell a home while bathing.
•Easy to set-up and no installation or plumbing required.
•No more purchasing, transportation or storage of chlorine.
•No more skin irritations and itchy red eyes.
•Eco-friendly and very minimal electricity required.
•LED indicator lights illuminate for easy salt level reference.
•Commercial grade titanium cell plates coated with precious metals.
•Switch-mode power supply supplies smooth current to cell resulting in longer lifetime.
•Critical fault protections with automatic shut-down.