Features: [Quality Material] Made of quality ABS material more . [ Alloy Probe] Anti-rust design & no magnetic interference ensuring high precision. [Backlight Display] Easy to read and does not affect use in dark. [Multiple Measurements] 3 in 1 EC//Temperature Measurement more practical. [Switchable Units] ℃ / ℉ switchable in one click convenient to operate. [Data Hold] data retention function is convenient for checking result after being taken out of solution. [Wide Applications] Suitable for measuring of drinking water laboratory industrial waste water aquarium swimming pool aquaculture rice fields etc. Specifications: Model: TPH01648 / TPH01648A (Optional) Material: ABS Color: White / Yellow (Optional) Supply: 2 * 1.5V AG-13 Battery (NOT included) Measurement : : 0-9999ppm EC: 0-9999μs/cm Temperature: 0.1~80.0℃ (32.0-176.0℉) Temperature Compensation: √ Data Hold: √ Item Size: Approx. 155*30*15mm / 6.1*1.18*0.59in Item Weight: Approx. 57g / 2.01oz Package Size: Approx. 167*45*27mm / 6.57*1.77*1.06in Package Weight: Approx. 85g / 3oz Packing List: 1 * Water Quality Analyzer 1 * User Manual (English)