Product Name: TDS Water Quality Testing Pen Battery type: 3V (CR2032) button battery TDS testing range: 0~9999PPM Conductivity testing range: 0~9990 US/CM Product material: ABS plastic/metal alloy probe Temperature testing range: 0.1 ℃~80.0 ℃ Testing items: TDS value test, conductivity test, temperature test Application scope: Used as a tool for testing drinking water quality in the water treatment industry, drinking water industry, households, personal home tourism, field operations, etc. Influencing factor: Water temperature: TDS pen cannot be used to measure high-temperature water bodies (such as hot water) Product packaging: leather packaging/plastic box Accuracy: ± 2% The flow rate of water: TDS pens cannot be used to measure water bodies with significant shaking Region: TDS values vary in each region and city due to differences in pipelines and water sources Maintenance: Keep the electrodes clean, cover the electrode protection cover, and if not in use for a long time, please remove the battery Product weight: net weight 43G, leather packaging 53G, plastic box packaging 90G Features: -3 in 1 Digital TDS meter can provide accurate readings of TDS EC and temperature. -TDS instrument has automatic temperature compensation in measurement mode. -5 minutes automatic shutdown. Save power and extend battery life. -Multi mode conversion: there are 4 different modes for TDS EC instrument. Press shift to switch between different modes. - Mode memory function. Each startup mode is the default mode used before shutdown. Description: -TDS water meter is a professional water level tester with simple operation, fashionable appearance and small volume. -It is very suitable for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, laboratory and scientific testing, pool, ecological testing, colloidal silver, water treatment, etc. Note: -Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! -Please allow slight measuring deviation due to manual measurement. listing: 1 X Water Testing Pen(Battery included) (The product leaves the factory without batteries)

Note: The display screen of the products on sale does not have a green backlight.