1.high precision 2,fine aluminum alloy password box 3,portable ,easy to use 4,easy to take 5,easy to clean enviornment

brife introduction

the combination of all-suite features hgh precision,with fine aluminum alloy password box,portable,easy to clean environment to test the temperature,humidity,pressure,wind speed,noise and illumination.

It is a beautiful box of package to clean up the air-condition and heating engineer of the right-hand man.