Check the listing for details. HM Digital PH-200 Waterproof Professional Series. Condition: New. Listed at 79.99 USD. PH-200PH-200: Waterproof Professional Series pH/Temp MeterThe PH-200 is a professional grade pH/Temp meter ideal for all pH testing water. With its advanced microprocessor it provides highly accurate dependable readings in such applications as hydroponics, purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, and agriculture.FEATURES:Waterproof housing (IP-67 rating)Digital automatic calibration (one point), with digital fine tuningAutomatic Temperature Compensation (ATC)Auto-off function, data-hold function and low-battery indicatorEasy-to-read LCD screen with simultaneous temperature displayReplaceable Sensor (model SP-P2)Factory Calibrated: The PH-200 meter is three-point checked and factory calibrated to pH 7.0.UPGRADED: Includes a translucent cap, 2 Triple A (AAA) batteries, lanyard, and pH 7.0 buffer (sachet)