The Signet 3-8630-3P ProcessPro Chlorine Transmitter simultaneously displays free chlorine and pH levels on a bright LCD backlight display. The 8630 transmitter has two 4 to 20 mA outputs that can be programed to transmit chlorine, pH or temperature information to a data collection device. Two dry-contact mechanical relays can be used to deliver an alarm signal or activate a chlorine dosing system. Programming is simple and easy with Signet’s standard 4 button keypad. The menu option allows the use of an optional pH sensor to accurately calculate free chlorine level or select “Manual pH input” and enter the applications stable pH level to determine free chlorine levels.