It is recommended to use one speed controller to each Blowair device.
ENERGY-SAVING SPEED CONTROLLERS RX WITH THE SECURITY DEGREE IP52 5-stage speed controller Blowair RX 1,2A- is used to control the speed in single-phase fans. It consists of 5 controls 0 - 70 - 85 - 105 - 145 - 230V, power supply voltage-230VAC / 50-60Hz, allowable current output: 1,2A; protection: thermal breaker switch; dimensions: 126mm x 176mm x 56mm; weight: 1,3 kg.