The LonMark® certified LTEC Heat Pump (HP) Controller provides direct digital control of heat pumps. The LTEC HP Controller is designed to reside on the Siemens Building Technologies, Inc. APOGEE® for LonWorks® network, providing seamless interaction with all LonMark products. The LTEC HP Controller offers cost-effective flexibility by allowing selection of the best point configuration platform for any HP application requirement.