5 In 1 Environmental Multimeter. This multifunction meter measures number of environmental conditions, as well as wide range of electronics measurement, making it an excellent general purpose meter for school science departments. Featuring auto-range, data hold, relative measurement, backlight, auto power-off, and IEC1010 CatII 1000 Conformity.• DC voltage: 0.4 V/4 V/40 V/400 V/600 ±0.7 %• AC voltage: V/40 V/400 V/600 ±0.8 %• DC current: 40 mA/400 mA ±1.2 %, 10 ±2.0 %• AC current: 40 mA/400 mA ±1.5 %, 10 ±3.0 %• Resistance: 400 R/4 k/40 k/400 k/4 ±1.2 %, 40 ±2.0 %• Capacitance: nF/40 nF/400 nF/4 μF/40 μF/200 μF ±3.0 %• Frequency: 10 R/100 R/1 k/10 k/100 kHz ±2.0 %• Duty cycle: 0.1 ~ 99.9 ±3.0 %• Temperature: -20 °C 400 °C ±3.0 (0.1 °C), 400 °C 1000 °C ±3.0 (1 °C)• Humidity: 30 ~ 95 RH ±5.0 RH• Light: 4000 lux/40000 lux ±5.0 %• Sound level: 35 100 dB ±4 dB• Continuity test• Power: V (6F22) x1• Size: 185x85x44 mm