Control Techniques, part of Emerson Climate Technologies, is a world leader in the design, manufacture and support of Variable Speed Drives and Drive Systems. Control Techniques combines extensive HVAC-R industry experience, modular drive design and scalable and easy-to-use control options to provide the ultimate in comfort and energy savings. Its flagship Affinity Building Automation drive with built-in BacNet and support for all other major communication protocols, is easy to specify as it possesses all the design features sought in an HVAC, plenum rated drive – Fire Mode, secure drive monitoring with 24VDC backup, Hand-Off-Auto keypad with on-board manual, two process PID loops, SmartCard parameter storage and copying device, and more. Control Techniques also provides soft starters, HVAC-R specific-duty drives, 18-pulse and other NEMA-1 and NEMA-12 electronic bypass control drive packages.  Control Techniques Americas is headquartered in Eden Prairie, Minnesota.