Designed for commercial contractors, The TRC Commander Transmitter is a completely portable professional grade wireless transmitter. The TRC Commander Transmitter is by far the most versatile wireless transmitter in the irrigation industry. Yet, it is simple to operate and operates in a license-free band. At the heart of the Commander System, one transmitter will operate a virtually unlimited number of receivers. It is the only transmitter designed to operate all TRC permanent receiver cards. Housed in a time-proven rugged plastic enclosure, The TRC Commander transmitter is designed to provide the irrigation professional with years of service. TRC Irrigation Remotes backs that up with a one-year warranty.