[ 7 in 1 water quality tester]Professional measure pH, EC, TDS(ppm), ORP, CF, RH, Temp meter , The measurement units can be switched on the screen with one click. [Wifi Tuya APP Connected]Accurate real-time Wifi data mission and clear measured values make it easy for you to save, manage and share test data without worrying about data loss. [Multifunctional removable electrode]One electrode can measure 7 kinds of values:PH/ORP/EC/PPM/CF/humidity/temperature, Corrosion-resistant probe with rapid measurement response. [LCD Backlight Display]Multi-parameter display at the same time, LCD backlight display for clear reading, support night monitoring [Wide Applications]Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools, and other water systems Noticed : Please keep the inst ent dry and keep the environment ventilated and dry when using. pH: 0.00 - 14.00pH EC: 0.00-20.00mS/cm CF: 0.1 - 199.9CF TDS: 0 - 9999ppm Temperature: 0.1°C-60.0°C,32.1°F-140.0°F ORP: -1200mV-+1200mV Humidit(air): 10%RH-99%RH Resolution pH: 0.01pH EC: 0.01mS/cm CF: 0.1CF TDS: 1ppm Temperature: 0.1°C/0.1°F ORP: 1mV Accuracy pH: ±0.5pH EC: ±2%F.S CF: ±2%F.S TDS: ±2%F.S Temperature: ±0.5°C ORP: ±5 mV ATC: 0.1℃-60.0℃ Working temperature: 0℃ - 50℃ (32℉ - 122℉) Voltage: AC100-240V/AC110V Plug Type: EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Black Material:plastic Package Contents: 1 x Water Quality Analyzer Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.