CBS and HBS Series rotary screw blowers from Kaeser Compressors combine the energy efficiency savings of the Sigma Profile rotary screw airend with the convenience of a complete blower package. Designed to ensure reliable operation for even the most demanding wastewater treatment plant applications, the blowers arrive ready for use and include a premium efficiency TEFC motor, inlet/outlet silencers, full sound enclosure, starters/drive, a full complement of sensors, and an onboard controller. Units are available with wye-delta start or variable-speed drive. Models include Sigma Control 2, which monitors all pressure, temperature and other sensors, and includes expanded communication features. The Ethernet port and built-in web server enable remote access and seamless integration into wastewater treatment plant control/monitoring systems. Modbus, Profibus, Profinet and Devicenet industrial communication interfaces are available. 877-596-7138; www.us.kaeser.com