Ph-618L Portable PH Meter 2 in 1 PH Temperature Water Quality Tester with Backlight for Swimming Pool Drink Water Aquarium 40%off Feature: 1. All readings go through automatic temperature compensation (ATC). 2. Large screen display, high resolution and precision, fast and accurate. 3. Simple operation, accurate measurement and automatic correction. 4. Application areas: aquaculture, industry and agriculture, environmental protection, food manufacturing, water purification, swimming pools, aquariums, fish hatcheries, food processing, laboratories, paper industry, etc. Specification: Range: pH 0.00-14.00, Temperature 0& 8451;-50& 8451; (32°F-122°F) Resolution: pH 0.01PH, Temperature 0.1°C (0.2°F) Accuracy: ±0.1pH, Temperature ±1.0°C Battery: 4×1.5V (AG-13)(Not included) Temperature Compensation: 0°C~50°C Operating Temperature: 0°C~50°C Dimensions: 210mm×35mm×35mm Electrode wire length: about 1.2M Weight: 100g Packing: 1* pH-618L Meter 1* User Manual 1* Screwdriver