Zetron announced it has added the Model 807 to its MPT 1327 line of trunking controllers. The model 807 is a single-site controller that is designed as an economical entry-level solution for single-site dispatch-only operations. The unit features a modular “plug-and-play” architecture to allows expansion to as many as 24 channels at a single site. The Model 807 offers support for 500 fleets, external and internal alarms, and customizable user voice prompts, the company said.