There are two switch delay patterns for various cases. If the air temperature increases above the thermostat set point the fan switches to the high speed (maximum airflow rate). If the temperature decreases below the thermostat set point the fan switches to the pre-set lower speed.
eBay
5.25inch Fan Controller Touchscreen Support 5 Channel Automatic Manual Control Temperature Monitor Fan Speed Display Fan Control
Aliexpress UK
Excellent ABS Housing: The housing of this governor is made of excellent ABS material, which is wear resistant and has a long service life. Maximum Input Power: 4000W. Why buy from us?. We partner with top manufacturers, not the cheapest, ensuring that our products are of the highest quality.
eBay
80mm AC 220V 240V Metal Frame Cooling Fan SJ8025HA2, High-Speed Dual Ball Bearing Fan for Server, Cabinet, Industrial Equipment
Aliexpress UK
eBay
120mm Server Fan 3000RPM High Speed 100V 120V 22V 240V Btc Machine Chassis Workstation Cabinet Radiator Server fan
Aliexpress UK
Connect motor lead ends to the M1 and M2 points. For single flow fans Do not connect any lead to CW and CCW points.
eBay
Double 120mm High CFM Computer Fans 110V-240V Variable Speed Fan, Cooling for Server Closet Cabinet 896C
Aliexpress UK
Maximum Input Power: 4000W. For AL-KO AKS 3004 Hitch Stabiliser Side Friction Pads & Front Rear Pads Caravan. 10A Overload Protection Switch. Black Horse Nose Net Sun Fly Mask Shield Pollen Filter for Pony Cob M L Size.
eBay
Fan Controller For Chery A3/Cielo M11 J3 A5 Fora E5 Eastar Arrizo 7 Fan Speed Control Module Relay A21-3600080
Aliexpress UK
No Motor Hum | 5 Speed Settings | IP54 Protected. Neon on/off indicator – clear operation status. Multiple amp sizes available – select the correct option for your fan load.
eBay
SXDOOL High quality 12V DC fan speed cooling fan controller 5A maximum support
Aliexpress UK
eBay
Gdstime 120mm 4500RPM High Speed Server Fan With Controller 12cm 12V 220V Btc Machine Chassis Workstation Cabinet Radiator Fan
Aliexpress UK
Industrial Extractor Fans. Extractor Fans & Heaters. Heavy Duty Industrial Axial Extractor Fan. ✔ Short cased compact design. In such cases Industrial Cooling Fans. Cooling Fan. Industrial Heaters.
eBay
for Delta BFB1012VH 9733 Turbo Centrifugal Fan Blower 12V 1.80A High Speed with Variable Speed Controller for DIY Cooling
Aliexpress UK