Chemtrol CH250 ORP-PH Digital Controller

250 ORP/PH Chemtrol Controller with Sensor. Chemtrol 250 is a simple and inexpensive controller for Residential Pools and Spas, Commercial Pools and Spas, Hotels, Motels, Health Clubs, Apartments Buildings and Condo Associations.Sanitizer and pH Control made easy. The CHEMTROL 250 is a microprocessor-based digital controller designed to maintain both sanitizer ORP (oxidation-reduction potential or Redox) and water pH in high-end residential pools, small commercial pools and spas and light industrial applications.Designed for affordability, simplicity of installation, ease of use and long-term reliability, it includes features normally not found on this type of controller, such as:adjustable setpoints, adjustable high and low alarms, adjustable overfeed safety timers and adjustable proportional feed control.The CHEMTROL 250 controller is based on 20+ years of experience in pool and spa automation with over 25,000 installations worldwide. Featuring a 5-year electronics warranty, it actually pays for itself in 1 to 2 years through cost savings in operating and maintenance expenses.Includes shipping in the continental U.S.