TrolMaster Beta-2 Day/Night Fan Speed Controller Plastic Black & White Hydro Film With a balanced NPK ratio

With a balanced NPK ratio of 8-11-21

see below for compatibility list

• 1 x Round Horseshoe Feeder Ring

300 x 150 x 230cm (HC)

TrolMaster Beta-2 Day/Night Fan Speed Controller Plastic Black & White Hydro Film With a balanced NPK ratioThe 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. Features: Digital Display Built in Photocell sensor Day Night Control Specifications: Input Voltage: 120 Volts AC