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This document summarizes a cellular jammer system that can block transmissions on up to 4 frequency bands. It lists potential locations for usage, such as meeting rooms, museums, and hospitals. Safety instructions are provided, such as testing the device first to avoid interference and turning it off before charging. Key specifications are outlined, including output power levels for different frequency bands and a power source of 5V 10AH with a working time of 2-3 hours.
