SDR900H PTZ camera control system

Trango SDr900H™ 900 MHz pan-tilt-zoom (PTZ) camera control system serial data radio wireless transceiver. "The SDR900H™ remote camera control transmission system allows you to control the pan, tilt, and zoom of a camera from up to twelve miles away (with line-of-sight between transceiver radios). The SDR900H™ integrates easily with most major dome manufacturers and is compatible with RS232, RS422, and RS485 protocols." [trangosys.com/sites/default/files/support/documents/infobase/pdfs/DS_SDR900H.pdf]