Feature:1.3 in 1 Digital TDS meter can provide accurate readings of TDS EC and temperature.2. TDS instrument has automatic temperature compensation in measurement mode.3.5 minutes automatic shutdown. Save power and extend battery life.4. Multi mode conversion: there are 4 different modes for TDS EC instrument. Press shift to switch between different modes.5. Mode memory function. Each startup mode is the default mode used before shutdown.Specification:Measurement range: conductivity: 0-9990 s / cmTDS:0-9999ppmTemperature range: 0.1-80.0(32.0-176.0)Accuracy: 2%Material: ABSSize: 154*30*14mm/6.06*1.18*0.55"Packing List:1*TDS Meter Digital Water Tester(Without Battery)1*User Manual1*Leather Case1. Please allow 1-2cm size differences due to manual measurement.2. Due to different calibration of the monitors, the colors of the items displayed in the photos may differ on your computer monitor.3. If the product you receive was damaged, incorrect, or any other issues, please contact us for assistance.4. Please leave 5-star feedback if you're satisfied with our products and services, we will appreciate it.