TrolMaster Day/Night Fan Speed Controller Beta-2 Hydroponic Nutrients They can be cultivated either

They can be cultivated either indoors or outdoors

Press the on/off button to turn on the meter

To maintain higher PPM levels

A combined pH and EC controller

TrolMaster Day/Night Fan Speed Controller Beta-2 Hydroponic Nutrients They can be cultivated eitherThe BETA 2 can control variable speed fans by using the current temperature to increase or decrease the fan speed. By increasing the fan speed, cooling is increased decreasing fan speed will reduce cooling capacity. Using the BETA 2 in this way provides a VERY economical and efficient way of dealing with heat within an enclosed space. Digital Display Built in Photocell sensor Day Night Control Input Voltage: 120 Volts AC Output Switch: Triac Fuse