This is a Ventilution Climate solutions twin input Thermometer/Hygrometer with a probe to monitor your nutrient tank also, all from one unit. This can be fixed to a wall or use built in stand, and has easy to read digital displays.
The Thermometer/Hygrometer will enable you to maintain a stable temperature and humidity in your grow room. This is very important to ensure as your plants cannot flourish in an environment that is too hot or too humid and they may even die if your climate control is ineffective.

This unit has maximum and minimum memory and simultaneously displys temperature and humidity.
This can be switched from Centigrade to Farenhite if required.

The indoor temerature range is between -10 degreesC to 50 degreesC.
The indoor Hygrometer range is 25% RH to 98% RH.