Digital Day / Night Fan Speed Controller （BETA-2）
The 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.
Built-in Photocell sensor
1 x Fan Controller
1 x Temperature Sensor
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It was the best price i found anywhere and i knew it was being sent by a reliable company. It works well and does what it says it will. It makes my fan run more quietly and at a speed i prefer.
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