Panel-mount controller includes many features usually found on higher priced models. Unit features recorder output, automatic temperature compensation, and high/low overrange lights.
Adjust set points, slope, and calibration via recessed front-panel potentiometers. Push buttons let you display current process value, high or low set point, or temperature. Select pH or ORP mode via an internal switch.
Two SPDT relays control external devices. Relays are protected by a RC suppression circuit. Order disposable electrodes below.