Specification BatteriesIncluded : 1 BatteriesRequired : 1 Brand : MyyYiTar BulletPoint1 : Perfect design: Professional TDS Meter 3 in 1. Upgraded with big backlit LCD for easier reading, hold function for easier check result, instrument will automatically shut off to save battery power without pressing any key in 2 minutes. When you press the SHIFT button, the instrument will automatically shift between the four modes. BulletPoint2 : Simple operation: Its user-friendly interface makes it accessible to all, from beginners to experts. With just a few simple steps, first remove the electrode protective cap before use, second put the meter into the water and note the water should not over the immersion line ,after do that you can put on/off button. Third after the numerical display is steady , press the HOLD button and checking the result . BulletPoint3 : Multipurpose TDS Tester: Test the purity of drinking water to ensure it's safe and healthy, monitor if Reverse Osmosis (RO)/Deionization(DI) System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), pool and spa, etc. 3 in 1 TDS Meter, Electric Conductivity Meter & Temperature Meter features the most updated technology. Three different measurement needs can be fulfilled by one water tester meter. BulletPoint4 : After-sale Guarantee:We offer a 90 day warranty service. If there are any issues with this TDS Meter, please feel free to contact us at any time BulletPoint5 : Compact&Portable:TDS meter size is 6.1"x1.2"x0.6".1.99oz.Easy to carry and storage.Handy kitchen gadget.Good indicator for the water's ppm. Monitoring the water quality level at all times ExternallyAssignedProductIdentifier : 5557890107920 ExternallyAssignedProductIdentifier1 : 719986128591 ExternallyAssignedProductIdentifier2 : 0719986128591 ExternallyAssignedProductIdentifier3 : 00637395446153 Hazmat1 : LITHIUM METAL BATTERIES PACKED WITH EQUIPMENT Hazmat10 : DE_SmallLithiumMetalBatteryWithEquipment Hazmat11 : EG_SmallLithiumMetalBatteryWithEquipment Hazmat12 : ES_SmallLithiumMetalBatteryWithEquipment Hazmat13 : FR_SmallLithiumMetalBatteryWithEquipment Hazmat14 : GB_SmallLithiumMetalBatteryWithEquipment Hazmat15 : IN_SmallLithiumMetalBatteryWithEquipment Hazmat16 : IT_SmallLithiumMetalBatteryWithEquipment Hazmat17 : JP_SmallLithiumMetalBatteryWithEquipment Hazmat18 : MX_SmallLithiumMetalBatteryWithEquipment Hazmat19 : NL_SmallLithiumMetalBatteryWithEquipment Hazmat2 : UN3091 Hazmat20 : PL_SmallLithiumMetalBatteryWithEquipment Hazmat21 : SA_SmallLithiumMetalBatteryWithEquipment Hazmat22 : SE_SmallLithiumMetalBatteryWithEquipment Hazmat23 : SG_SmallLithiumMetalBatteryWithEquipment Hazmat24 : TR_SmallLithiumMetalBatteryWithEquipment Hazmat25 : US_SmallLithiumMetalBatteryWithEquipment Hazmat26 : ZA_SmallLithiumMetalBatteryWithEquipment Hazmat27 : 9 Hazmat3 : II Hazmat4 : AE_SmallLithiumMetalBatteryWithEquipment Hazmat5 : AU_SmallLithiumMetalBatteryWithEquipment Hazmat6 : BE_SmallLithiumMetalBatteryWithEquipment Hazmat7 : BR_SmallLithiumMetalBatteryWithEquipment Hazmat8 : CA_SmallLithiumMetalBatteryWithEquipment Hazmat9 : CN_SmallLithiumMetalBatteryWithEquipment IncludedComponents : no ItemName : MyyYiTar Water Quality Tester, TDS Meter, EC Meter & Temperature Meter 3 in 1 Digital Water Tester,0-9990ppm, Ideal Water Test Meter for Drinking Water,Pool, Aquariums etc.2 PCS ItemPackageDimensions_Height : 0.98 inches ItemPackageDimensions_Length : 9.8 inches ItemPackageDimensions_Width : 5.1 inches ItemPackageQuantity : 3 ItemTypeKeyword : swimming-pool-testing-strips Manufacturer : MyyYiTar ModelNumber : A1 NumberOfItems : 2 NumberOfLithiumMetalCells : 1 PartNumber : MYD-1D001 ProductDescription : Portable TDS &EC meter is a professional instrument with multi-function,can be used to testing water TDS(the weight of total dissolved solid of water, unit is mg/L or ppm)conductivity( the ability of conduction current expressed in digit ,unit is us/cm)and the temperature It has high performance ,pen-type design ,fast numerical stability and accurate result