The step transformer controller has a special characteristic in that the ventilators make no noise hum at lower rotations. The controller controls the fan speed with a 6-step up/down function based on the temperature. The temperature sensitivity (hysteresis) can be set using two knobs. The intake fan runs 1 step behind the exhaust fan to prevent odors from escaping.
For example, the exhaust fan runs on step 1, while the intake fan runs on step 0 (stop). When the exhaust fan switches to step 2, the intake fan switches to step 1, and so on, until the exhaust fan reaches the maximum step 6, at which point the intake fan will run on step 5.
The controller comes as a finished part and is ready to use. This reliable fan controller includes a sealed water-resistant cover, plugs with flap-lids, and a low voltage sensor, making it perfect for humid rooms. The sensor comes with a 4-meter long cable and can be extended up to 8 meters.
Sizes and technical data:
Case: WxHxD = 200x250x180mm
Controller: WxHxD = 265x300x205mm
Designed for: 2A (for 2 fans)
Volts: 230V / 50HZ
Digital sensor 5V measures temperatures from –55°C to +125°C (–67°F to +257°F)
0.5°C accuracy from –10°C to +85°C
Protection class: IP54
Settings range:
Temperature: 20°C - 30°C
Temperature hysteresis: 2-8°C