Display: LCD digital display
Auto change range
DATA HOLD function
AVG/ MAX/ MIN/ DIF/ ( MAX-MIN) fuction
Low battery voltage indication
Back Light
AUTO/ MANUAL Power OFF selection
Power Supply: 6F22( 9V)

Specification:
Temperture -10~ 60
Humidity 20% ~ 80% RH
Light 0~ 50000LUX
Anemometer 0.4~ 20m/ s
Air Flow( CMM) 0~ 999900CMM
Sound level 30~ 130dB( A)