Reads pH and temperature. ORP readings are available with the optional probe. Records data onto standard SD memory cards (like a digital camera). When full, simply exchange SD cards for unlimited data storage. The removable SD card is easy to transport and insert into a computer’s memory card slot or SD card reader. Uploads pre-formatted data to Excel, without the need for additional software and cables. Additional SD cards are readily available in a variety of memory sizes. Each data set includes pH, temperature, time and date. Features ATC (automatic temperature compensation) or manual temperature adjustment, automatic calibration recognition, min/max, auto power off, low battery indicator and hold function. This well-made unit is extremely accurate with fast response times and includes a fold-out easel back and a large easy-to-read backlit LCD. Comes ready to use in a soft carrying case with 6 AA batteries, instruction manual, and an SD card. Uses optional USB Power Cable (SP-840058), or AC Adapter (SP-840097). ATC temperature probe (SP-840038)  available as an optional accessory. Will accept any pH or ORP probe with a BNC connector. PROBE NOT INCLUDED.