1. Wide range can be used for small appliances lighting products, etc. 2. High precision professional level parameter adjustment 3. Multi-functional adjustable upper and lower limit setting rates, etc. 4. Easy to operate without the need for professional staff to understand at a glance 5. This machine uses four digital tubes, six table heads for data visual display 6. Wide voltage design: AC85~265V50/60Hz 7. DC gear without power supply alone: DC11.5 ~ 350V 8. Illuminance meter test range range: 0-50000LUX (optional function) 9. Support black and red spring clip interface fast wiring and multi-type compatible universal socket 10. Support electricity rate, annual power consumption in the daily power time setting 11. Support voltage, current, power upper and lower limit settings 12. Support one key data cycle switching function, to achieve synchronous view of multiple parameters Product parameters. Input voltage: AC75-265V 50/60HZ Current range:0-20A Frequency range:45-65Hz Power factor:0.100-1.000 Annual electricity consumption:00.01-9999 Annual electricity cost:00.01-9999 Light level:0000-60000 Carbon dioxide:00.01-9999 Display switch:Manual Accuracy:less than 0.5%(about 0.3%) Weight:0.7Kg Minimum power:0.1W Maximum power:5000W Power consumption:0.8W Six table data: AC voltage, AC current, total power, power factor, frequency, annual electricity consumption, annual electricity consumption, CO2 emission value, DC voltage, DC current, DC power Alarm function:Support alarm prompt after upper and lower limit setting Power cord length:0.6m Product size:200x100x35mm