Features:Display: 4000 countsBuilt-in Sound Level Meter、 Light Meter、 Ambient Temperature and Humidity TesterLarge dual LCD DisplayTests AC/DC Voltage and Current、 Resistance、 Frequency、 Duty Cycle & CapacitanceDiode Check and Continuity TestType K thermocouple contact temperature measurementData Hold and Relative MeasurementDisplay Back LightAuto Ranging / SelectionLow Battery DisplaySpecifications:DCV: 400m/4/40/400/1000V ?à 0.7%+2ACV: 400m/4/40/400V ?à0.8%+3; 750V ?à1%+3DCA: 400/4000u/40m/400m ?à1.2%+3 4/10A ?à2.0%+10ACA: 400/4000u/40m/400m ?à1.5 %+5 4/10A ?à 3.0%+10Resistance: 400/4K/40K/400K/4M ?à1.2%+5 ; 40M ?à2%+5Capacitance: 40n/400n/4u/40u/100uF ?à3.0%+3Frequency: 10/100/1K/10K/100KHz ?à 2.0%+5Temperature: -20 ~1000 ?à2.0% ; 4~1832 ?à2.0%RH: 20 to 95% ?à 5.0%、Lux: 4、000/40、000 Lux ?à5.0%Sount dB: 40~100dB ?à3.5%Diode test、 Continuity tester: Buzzer if resistance is less than 40 ohms.Duty cycle: 0.1%-99.9% ?à 3.0%.General Characteristics:Power Suppply: 3 * 1.5v AAA (not included)Dimension: 195 * 92 * 55mmProduct Weight: 390gPackage Size: 21 * 12.5 * 6cm / 8.3 * 5 * 2.5inPackage Weight: 590g / 1.3lbPackage List:1 * MASTECH MS8229 Digital Multimeter1 * Test Clip1 * Temperature Probe1 * English Manual"