PINPOINT pH Controller is a rugged controller, which includes the appropriate probe and calibration fluids. This device will automate up to 2 electrical devices for an aquaculture system or 2 separate pumps for a hydroponic system. This controller has the ability to control pH in both a downward and upward direction. Select your own setpoint and any range of acceptable pH around this setpoint. This full featured controller will handle up to 3.0 amps at 120 VAC. A 230 VAC version is also available. Comes complete with PINPOINT pH electrode with 10 foot cable, Pre-mixed High Precision Calibration Fluids, Probe Storage Bottle and Adjusting Screwdriver.