TDS Water Test Pen Digital Water Meter TDS Meter EC Meter Temperature Meter 3 in 1 0-9990 ppm Backlight for Drinking Water Tap Water Hydroponics Aquariums Swimming Pool

Description:   There is also 4 in 1 Mode select on our pen body, you could choose to switch ppm, us/cm, Celsius and Fahrenheit.   Super accurate, reliable and easy to use TDS, EC &Temp water tester reader, with backlight and auto-lock function.   Equipped with backlight LCD for easy reading. If TDS?40, the backlit color is green, if TDS>40, the backlight color is red.   From test beginning, the reading can be stabilized in seconds and locked automatically for easy read and record.   Before reading locked automatically, the reading can be locked manually if press “HOLD”.   Please dry the pen tip with a dry cloth and put the pen back into the pen holder after use.   Specifications: Measurement Range: 0-9990ppm (?999ppm Display×10) Accuracy: ±2% F.S Power Supply: 2*1.5V (LR44 Included) Operating Temperature: 0?-80? (32?-210?) Dimension: 162mm*29mm*15mm / 6.38”×1.14"×0.59” Weight: 45g / 1.58oz Package Included: 1*TDS pen, 1*instruction