■ 96X96 intelligent design pH / redox transmitter ■ outdoor waterproof design for wall, plate, tube installation ■ Large LCD display, with operating status and special symbol display ■ With backlight sensor, automatic and manual backlight setting function ■ Provide the electrode automatic cleaning device contact, the program set the output ■ provide solution grounding function, can eliminate the sample charged interference ■ Automatic correction: manual / automatic temperature compensation function and no     cycle correction warning ■ Password lock and key combination to enter the settings, calibration mode design,     enhance security protection ■ RS-485 interface output, can be directly connected with the digital system (PC-101RS     only) ■ With 0/4 ~ 20mA two output corresponding to set the pH / ORP, Temp. (PC-101     only)