The model FLEX III-A is a high quality low cost LTR and conventional controller that combines the functions of an LTR Controller, LTR Validator, CTCSS Controller, and a DCS Controller in a 1U size chassis. Internal hardware allows the unit to share a channel with both LTR and conventional users. Cross busy input can be used for additional flexibility.

Programming is via a windows based program. Compatible with the FLEX IV DSP D series controllers. If used in conjunction with a FLEX IV DSP D Controller, remote programming available over the Internet or any IP network.