Yale RFID (Radio frequency identification) Blocking Box Designed to prevent keyless vehicle theft by preventing thieves from copying car key fob information Blocks all signals - will block all signals once the box is closed Large capacity – fits 5 to 7 car keys, large mobile phones and wallets  170 x 120 x 90mm Car keys/fobs - prevents attempts to unlock cars by blocking the signal from the car keys/fobs  Model - YRFID-BOX-170
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