Chemtrol® PC7000 Programmable Controller, 110/230V. The Chemtrol® PC6000 & PC 7000 microprocessor-based programmable controllers are fully integrated command center for automated control of water chemistry and filtration. Featuring true duplex remote operation and choice of backwash programs for single or multiple filters, it introduces a new standard of sophistication in automated water treatment for applications like swimming pools, spas, waterparks and industrial water treatment. Each controller comes with an operation manual, on-site startup and training by a qualified dealer and the security of a 5-year electronics warranty.