This governor is suitable for AC 220V/110V 50Hz&60Hz fan motors. The governor can control the voltage of the fan according to the monitored temperature, so as to realize the speed control of the fan/motor When the temperature is lower than the set starting temperature value, the governor controls the fan to stop or maintain a low speed When the temperature is higher than the set full speed temperature, the fan runs at full speed, When the temperature is between the start-up temperature and the full-speed temperature, the fan speed increases as the temperature increases, and slows down as the temperature decreases, so as to achieve the purpose of intelligent temperature control, energy saving, noise reduction and emission reduction. name:Cabinet Fan Speed Control Material: Plastic Color: White + blue Product model: JAF22012 Specifications:for AC 220V/110V 50Hz&60Hz functions and technical parameters of the product: 1. Industrial-grade solution, integrated high-voltage and high-current thyristor chip, stable performance, can be used with confidence in outdoor/industrial scenes 2. Wide voltage design, adaptive 220V / 110V / 50HZ / 60HZ alternating current, maximum drive current 3A 3. With LED digital tube indication, real-time temperature display, with keys, you can easily set parameters 4. Built-in fuse, RC surge absorption current, power supply short-circuit protection circuit 5. Support two working modes: non-stop fan mode and shutdown mode 6. Comes with a high temperature warning relay output (dry contact), when the temperature exceeds the set high temperature threshold, the relay be closed 7. The temperature measurement range is -9~99℃, and the temperature control accuracy is ±1℃ 8. Guide rail installation, suitable for use in outdoor cabinets Package Contents: 1 x Temperature control governor Only