Three sets of relay control switches, with adjustable hysteresis control range;

Two output signals: software selects 0-20mA, 4-20mA, or 20-4mA output;

Double high impedance preamplifier: high input impedance, anti noise, strong anti-interference ability;

Multiple calibration methods such as two-point calibration, three-point calibration, and known concentration calibration;

Multi parameter display on the same screen: Simultaneously display pH (or ORP) value, temperature value, and working status;

Self set password: Users can set or modify their own password to prevent unauthorized personnel from entering and causing misoperation;

Human computer dialogue: menu operation structure, users can operate according to the prompts on the screen;

The measurement range and alarm upper and lower limits can be freely set; Alarm prompt for upper and lower limit exceeding limits;

Intelligence: Using a single-chip microprocessor to complete pH (or ORP) value measurement, temperature measurement, and compensation;