Cellbusters Zone Protector™ – Detect Cell Phones & Hidden Transmission Devices. In April, seven inmates were killed and at least 20 hurt during a violent riot involving rival gangs that began Sunday night at the South Carolina’s largest maximum-security prison, authorities said.   South Carolina Gov. Henry McMaster said on Tuesday, that contraband cellphones had a … Continue reading Cellbusters: Detect Cell Phones to Save Lives (Learn More, Multi-Video)