Humidity & temp. step-up transformer - Controller (2fan) 2.5A

The step transformer controller has the special characteristic that the fans make no noise "hum" in the lower rotation. The step transformer controls the fan speed from itself 6-step up/down according to the humidity and temperature. Temperature and hysteresis (sensitivity) can be set on two knobs as well as humidity and humidity-hysteresis on the other two knobs. The intake fan runs 1 step behind the exhaust fan to prevent odor from escaping. Sample: Exhaust fan runs on step1, intake fan runs on step0 (stop), when the exhaust fan switches to step2 the intake fan switches to step1 etc... until the exhaust fan reaches the max. step6 the intake fan will run on step5. The controller comes as a finished part and is ready to use. This reliable fan controller comes complete with 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. Watch tutorial on youtube: Sizes and technical data's: Case: WxHxD = 200x250x180mm Controller: WxHxD = 265x300x205mm Designed for: 2.5A (for 2 fans) Volts prime: 230V / 50HZ Volts sec. 80V, 110V, 140V, 170V, 200V, 230V automatic-steps 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 humidity accuracy ±4.5%rh Protection class IP54 Settings range: Temperature: 20C° - 30C° Temperature hysteresis: 2-8C° Humidity: 30% - 100% Humidity hysteresis: 6%-30% User Manual : http://www.g-systems.eu/products/fancontrolers.html?page=shop.getfile&file_id=249&product_id=81 Watch tutorial video: [embed]https://www.youtube.com/watch?v=9CPzYuIfE8A&feature=youtu.be[/embed]