Courtrooms and Town Halls can be home to raised tempers and sudden violence and the quicker an alert can be issued, the quicker a resolution can be forthcoming. Many times, deploying a traditional hard-wired duress solution is extremely difficult and expensive. Our Guardian repeaters are completely wireless requiring no cabling and no A/C power. Installation is simple and inexpensive. Additional repeaters can be installed at any time to increase coverage, cover new additions, or even extend coverage to outdoor areas or between buildings.