Relative Humidity & Temperature SD Card Logger Growing Accessories suitable for both indoors and

suitable for both indoors and outdoors

It tends to be stable after filtration

and thoughtful features that cater to both beginner and seasoned growers

Charcoal-based carbon filter loaded with 30 lbs bituminous charcoal

vitamin B1

Relative Humidity & Temperature SD Card Logger Growing Accessories suitable for both indoors andReads Relative humidity (RH), ambient temperature, dew point and wet bulb, and functions as a type K or J thermometer. Records data onto standard SD memory cards (like a digital camera) for unlimited data storage. The removable SD card is easy to transport and insert into a computers memory card slot or SD card reader. Uploads pre formatted data to Excel, without the need for additional software and cables. Additional SD cards are readily available in