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BETA-2 Fan Speed Controller

103.96 $USD

Fan Speed Controller for variable-speed fans uses current temperature to increase or decrease fan speed.

Digital Day/Night BETA-2 Fan Speed Controller

The BETA-2 Fan Speed Controller for variable-speed fans uses current temperature to increase or decrease fan speed. By increasing the fan speed, cooling is increased… decreasing fan speed will reduce cooling capacity. Using 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 Rating:                                       6A/250V~
  • AC Power Cord Length:                      1.8m
  • Speed Control Range:                        25-100%
  • Temperature accuracy:                       +/- 1F
  • Package Dimensions:                         275mm(L) x 87mm(W) x 94mm(H)
  • G.W. per pack:                                    0.56kgs

The BETA-2 is a simple and affordable way to control your fan. Choose your desired fan speed and temperature setpoint. When the temperature is lower than the setpoint, the controller will automatically maintain that specified fan speed. Or when the temperature is higher than the setpoint, the controller will output 100% power to the fan. Also, when the temperature is lower than the cut-off setpoint, the controller will shut down the fan. A built-in photocell located on the controller automatically detects the day and night status, controlling the fan in day/night mode separately. A remote temperature sensor with 16ft long cable allows close placement to the plant canopy.

TrolMaster Agro Instruments Co., Ltd. is an agriculture technology company, offering next generation environmental controllers in the horticultural market.

We have deep roots in the horticulture and Controller industries and have invented a platform that is smart and connective. With an incredible flexibility, our platform is able to cover each individual grower’s needs, from the home hobbyist to large industrial facilities.

Our platform offers remote access applications that enable our customers to manage every aspect of their grow facilities from anywhere anytime. We deliver automation, control, data collection, monitoring, and optimization. The upgradability of our systems also offers the value of continual improvements. We listen to growers, build products for growers…

Weight 0.5 kg
Dimensions 11 × 4 × 4 in


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