1Water quality analyzer can be used to measure the PH and TDS value of the solution. 2With a large and clear LCD backlight display, easy to read the measurement results. 3Suitable for water systems such as water sources, aquarium, hydroponics, hot springs, swimming pools, etc. 4With a small screwdriver, PH and TDS can be easily calibrated in a simple way. 5Separate PH and TDS electrodes, support automatic temperature compensation, and longterm online monitoring. 6With CE and RoHS certification, it can provide safer and more accurate measurement. Condition: 100% Item Type: Water Quality Monitor Material: Plastic Battery Model: AG13 Battery Attributes: 4 x 1.5V Button Battery (Battery Not Included) Battery Capacity: 4x160mAh Plug: EU Voltage: 230-240V Power Supply: DC 6V (Available Power Adapter) Range: Ph: 0.00-14.00ph TDS: 0.00-19.99ppt Resolution: Ph:0.01ph TDS: 0.01 Accuracy: PH Value: 0.1ph TDS: 2%F.S. Temperature Compensation: 0-50 (32-122) Working Temperature: 0-50 (32-122) Weight: Approx. 383g / 13.5oz TDS Electrode Wire Length: Approx. 113cm/44.5in PH Electrode Length: Approx. 118cm/46.5in 1 x Manual1 x Adapter1 x Display1 x Screwdriver4 x Accessory1. Please allow 02 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent randomly,and make sure you will not mind before ordering.