Fangrui Product Details Measures Electrical Conductivity (ec) And Temperature. Automatic Temperature Compensation (atc) Water- Housing Measurement Range:0-9999 S Digital Calibration (push Button), Auto-off Function, Data-hold Function And Low-battery Indicator. For Introduces Its New Series, A Line Of Handheld Ec Meters With A Sleek Design Thats For Todays . The Digital Water Testers Are Generation For Todays Tech- And Health-conscience Consumer. Display:large And Easy-to-read Lcd Screen Includes Simultaneous Temperature Reading. Factory Calibrated:the Is Calibrated With A 700 S Solution. The Meter Can Be Recalibrated With Digital Calibration Using The Push Buttons, Rather Than A Screwdriver. Ec Range:0-9999 S (s/cm) Temperature Range:0-8032-176resolution:1 S; Temp. Resolution Is 0.1accuracy:+/- Calibration:digital Calibration By Push Button. Housing:water- Power Source:1 X 3v Button Cell (model Cr2032) (not Included In Delivery) To Convert S (micro-) To Ms (milli-):divide By 1000. 1000 S Equal