The Signet 8750 pH/ORP Transmitter is designed for broad application use. The unit auto-configures for either pH or ORP use when connected to Signet pH or ORP sensors. Multiple mounting options allow for versitile installation.The EasyCal menu features automatic buffer recognition for mistake-proof pH or ORP sensor calibrations. Intuitive software and the four button keypad arrangement make it lets you access important information such as pH or ORP, mV input, temperature, calibration, relay set-up menus and more.