Specification BatteriesRequired : 1 Brand : YWBL-WH BulletPoint1 : After Sale Service: If you do not satisfy with our products or if you have any questions, please come to us. We would work out satisfactory solution to all your problems. BulletPoint2 : Technical indicators: Voltage: AC 80-300V, Current: AC 0.0-100A, Active power: 0.0-30000W, Electric energy: 0-99999kwh, Power factor: 1.000-0.000, Electric energy of cumulative time: 0.00-.59h. BulletPoint3 : More Functions: 1.Data reset for multiple measurement needs. When the watt meter displays electrical energy, press the SAM CK button for five seconds, the meter will be reseted. 2.The value of electric energy and electric energy of cumulative time will be automatically saved when power off, and when the measurement power is reconnected,the meter will on cumulating data. BulletPoint4 : Multi-field application: This din rail voltmeter ammeter is built in transformer which can meet the load maximum current 100A. It can be used in school, market, home, industry, laboratory and other fields. Attention: This energy meter can only use to measure 50/60HZ AC city electricity. It will be destroyed when used to measure waves, output of inverter, or non-standard sine waves. BulletPoint5 : and high precision: This home electricity usage monitor features high quality ABS flame resistant material and high percision chip, making it to use. Accuracy is 1%±2 digits, measuring Speed is 2 times/s. Color : Clear Color1 : Black Color2 : white ExternallyAssignedProductIdentifier1 : 746771530758 ExternallyAssignedProductIdentifier2 : 0746771530758 IncludedComponents : inc ItemName : YWBL-WH Digital Energy Meter, Multi-Functional LED Active Power Meter for Measuring The AC Voltage and Current (AC80-300V) ItemPackageDimensions_Height : 8.7122 centimeters ItemPackageDimensions_Length : 6.2992 centimeters ItemPackageDimensions_Width : 8.1026 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : voltage-testers Manufacturer : YWBL-WH Material : plastic MaximumOperatingVoltage : 50 volts_of_direct_current MeasurementAccuracy : +/- 0.1% MeasurementType : Voltmeter MeasurementType1 : Ammeter MeasurementType2 : Voltmeter MeasurementType3 : Ammeter MeasurementType4 : Ohmmeter MinimumOperatingVoltage : 4.5 volts_of_direct_current ModelNumber : YWBL-WHtrei5ncsmf-01 NumberOfItems : 30 PartNumber : YWBL-WHtrei5ncsmf-01 PowerSourceType : Powersource ProductDescription : Specification: Measurement voltage: AC80-300V, AC200-450V (Optional) Measuring current: AC100A (additional transformer is required if it is greater than 100A) Power supply: no power supply is required Measurement accuracy: 0.5% Overall dimensions: 54×80×64mm / 2.1×3.1×2.5in Installation: 35mm din rail installation