Every unit is supplied with a comprehensive operation manual plus on-site start-up and training by a Qualified Dealer and a Five-Year electronics warranty. With its advanced microprocessor-based technology, the CHEMTROL® PC 2100® Programmable Controller introduces a new standard of sophistication in automated control of sanitizers (chlorine or bromine), oxidizers and pH. Large 8-line LCD Display for easy operation ORP Control of sanitizer and/or oxidizer activity pH Control with choice of acid or base feed Programmable shock treatment and chemical savings cycles Langelier saturation index for water balance Automatic data logging for up to 999 tests USB and Micro SD ports for program updates and data logging Safety flow switch Full screen menus in English, French or Spanish Screen displays in US or Metric units Compatible with all common sanitizers and oxidizers Note: Flowcell assembly is an option.