Stop Car Thieves With A GoDark Vault Precision milled from a solid block of aluminum, the GoDark Vault Key Fob Faraday Cage offers the ultimate in key fob protection. The GoDark Vault protects your car from fob relay theft by blocking all EMF signals to or from your keyless remote or key fob. Simply place your fob in the vault and sleep better at night knowing your car will still be there in the morning. • 1/12 Inch (2.1 mm) thick solid aluminum EMF shielding • Blocks all signals to keyless remote or key fob • Blocks 433.92 MHz for European, Japanese, and Asian vehicles • Blocks 315 MHz frequency used for most North American made cars • Blocks CDMA, GSM, DCS, PHS, 3G, 4G, 5G, LTE • Blocks WiFi (2.4 - 5 GHz), Bluetooth (2.4 GHz) and GPS (1-2 GHz) • Blocks RFID and NFC in 13.56 MHz • Magnetic closure and sturdy hinge keeps the lid sealed tight **Cost of aluminum is very high right now. We apologize for the low margins on this item.