1. Automatic selection of measuring function and range.2. Full range oveload protection.3. Max. display value: SZ01 6000 digits/SZ02 9999 digits4. Automatic shut down time: 15 minutes. Sampling time: about 3 times/second. supply: 2*1.5V AAA Battery (Not included)5. The instrument specifies one year as a cycle, and shall be re-calibrated under 18~28, with relative humidity less than 75%.SZ02: The max voltage between the measuring end and the ground is 1000V DC or 750V AC.SZ021. Model: SZ022. AC Current: 999.9mA/10A3. DC Current: 999.9mA/10A4. DC Voltage: 600.0mV/9.999V/99.99V/999.9V5. AC Voltage: 600.0mV/9.999V/99.99V/999.9V6. Line on-off Test: 17. Resistance: 999.9/9.999k/99.99k/999.9k/9.999M/99.99M8. Diode Test: 1V9. Capacitor: 9.999nF/999.9nF/9.999uF/99.99uF/999.9uF/9.999mF/99.99mF10. NCV: YES11. Temperature: -40~1000/-40~183212. Frequency: 100Hz/1000Hz Material: plasticcolour: redPackage Contents:1 x Multimeter2 x Test Line1 x Temperature LineOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.