The Orion 607 features six BNC and pin-tip inputs, one BNC output and two RS232 outputs for communication to optional printers or computers. Touch sensitive electrode switches and ± 200 mV calibration knobs provide the ability to accurately calibrate each channel. The Orion 607 switchbox is suitable for use with all Orion pH or pH/ISE meters, as well as other meters, where the 607 functions as a manual switchbox. When controlled by Orion EA940 and 920A pH/ISE meters, calibration information for up to seven electrodes is stored in memory. RS232 interface cable included.