Check the listing for details. Johnson Controla P66 Electronic Condenser Fan Speed Control 24 Vac. Condition: Used. Listed at 75.00 USD. Up for sale is a Johnson Controla P66 Electronic Condenser Fan Speed Control with 24 Vac. This item is perfect for those looking to improve the performance of their industrial automation and motion control systems. The brand of this speed control is known for producing reliable and high-quality products, making it a great investment for any business or individual looking to optimize their drives and motor controls. Whether you need to upgrade your current speed control or are starting a new project, this Johnson Controla P66 Electronic Condenser Fan Speed Control is a great option. With its advanced features and powerful capabilities, you can rest assured that this device will provide the performance and reliability you need to get the job done.