faraday box for car keys signal blocking key safe black 9 17 12cm Colour:9x17x12cm our Finger Ring Phone Holder

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faraday box for car keys signal blocking key safe black 9 17 12cm Colour:9x17x12cm our Finger Ring Phone HolderSignal protection for keyless cars This Faraday box prevents your car key's signal from being accessed by blocking any transmission when closed. Simply place your key inside to reduce the risk of thieves using signal boosting devices to unlock your vehicle. Store and protect multiple keys Keep spare keys and family members' fobs together in one secure place. When tested, the box can hold up to ten extra sets of car keys, giving you peace of mind for