RAM Air-pro II fan controller
The RAM AIR-PRO II The RAM AIR-PRO II is an intelligent and silent indoor climate controller designed to control two inline/exhaust fans thermostatically, monitoring and keeping the desired room temperature and air pressure. The RAM AIR-PRO High Power operates at up to 7 amps per socket. The AIR-PRO's unique sofware will automatically calculate the running speed for the temperature/pressure desire…
Variispeed fan controller
Variispeed Fan Speed Controller The Variispeed Fan Speed Controller adjusts and controls the speed of your fans. This then ensures a longer life of the fan motor. It has variable speed control along with full power and off and is suitable for up to 300w.