Key signal-blocking box Strado model 5904172316981 — universal RFID Faraday cage for keys

Strado key signal-blocking box model 5904172316981 is a compact universal RFID Faraday cage designed to prevent wireless communication with keys and small RFID devices. The enclosure blocks radio frequency signals used by key fobs, passive RFID chips and contactless cards, reducing the risk of relay theft and unauthorized access. Its small footprint makes it suitable for home, office and travel use where secure short-term storage of car keys and other contactless items is required.

Advantages

The design provides passive signal attenuation without batteries or active components, ensuring consistent protection. The compact, lightweight construction allows convenient placement on shelves, in drawers or in luggage. The enclosure accommodates multiple keys or small cards simultaneously and is compatible with common RFID standards used in vehicle and access-control systems. Materials and construction create a reliable shield against a wide range of radio frequencies relevant to keyless-entry relay attacks.

Suitable for

• Storing car keys and key fobs to prevent relay theft
• Protecting contactless payment and access cards when not in use
• Securing keys and small RFID devices at home or in the office
• Temporary protection of keys during travel

Key specifications

• Form factor: compact enclosure designed for keys, key fobs and small cards
• Function: passive radio-frequency shielding (Faraday cage effect)
• Protection: blocks common RFID and keyless-entry signal bands to reduce relay and eavesdropping risks
• Power: no batteries or power source required
• Use environment: suitable for home, office and travel

How to use

Place the keys, key fobs or contactless cards inside the box and close the lid fully to activate passive signal blocking. Ensure items fit flat inside the enclosure without forcing the lid. For best results, keep the box closed whenever the stored items are not in use. Periodically inspect the enclosure for dents or damage that could compromise shielding performance.

Usage recommendations

Store only small keys and cards as intended; avoid placing large electronic devices inside. Keep the box dry and clean, and avoid mechanical deformation. For vehicle security, combine storage of the keys in this signal-blocking box with other standard safety practices such as locked doors and alarm systems.