PH and Temperature with LCD display (RS485 + 4-20mA)

1. English operation and settings;
2. pH/ORP measurements, upper and lower limit control, 4~20mA current output, RS-485 Modbus RTU data communications;
3. Automatic or manual temperature compensation settable;
4. Dual relay for pH upper and lower limit alarm, the amount of hysteresis can be adjusted freely;
5. Instrument mode isolation transmission port, the maximum loop resistance is greater than 300Ω
6. Audible alarm switchable on or off
7. LCD backlight can choose energy-saving mode, automatically shut down regularly
8. High-performance CPU, good electromagnetic compatibility
9. Password management function to prevent the mistake of non-professionals