Manta Ray Cell Phone Detector
Available from Berkeley Varitronics Systems
Manta Ray™ is the answer to the growing problem of unauthorized, illegal, unsecured & contraband cell phone use in correctional facilities, government buildings, corporate environments, financial institutions, universities & law enforcement agencies.
Detects all cell phones even when switched OFF and battery removed
Minimize false triggers from common items like keys, belt buckles, coins, watches, etc.
Cost effective & simple operation for anyone
Runs on standard, removable 9V battery for up to 3 hours