50 pcs 26 Bit EM Blue Proximity Key Fobs - Test Pack for EM Readers

In this review we look at the 50 pcs 26 Bit EM Blue Proximity Key Fobs from Panopticon Tech, a compact test pack aimed at installers and integrators who need to validate EM reader compatibility. The bottom line: this pack is for anyone who needs a reliable set of tokens to test or provision systems that explicitly use EM4200 Wiegand format readers. It is not a universal key fob set, but for environments running Rosslare, Uhpote, Biostar and other EM technology readers the 50-pack offers a convenient way to deploy or test access without buying individual custom-encoded tags.

Key Features

• 26 Bit EM4200 Wiegand Format: Ensures the fobs are encoded to the EM standard that works with dedicated EM readers, reducing guesswork during system setup.
• Pack of 50: Provides enough units for small sites, test deployments or staging areas so installers can test many doors or users at once.
• Compact Blue Design: The 30mm x 37mm x 5mm size and blue housing make the fobs easy to handle, carry on a keyring, and visually distinct in an access control environment.
• Keyless Entry Convenience: Eliminates the need for cards in temporary or demo setups, offering instant proximity-based access for authorized personnel.
• Works with EM Readers Only: Clear format limitation helps avoid wasted time trying to pair these with incompatible technologies.

Who It's For

The 50-pack is best for security technicians, installers, and small facilities that already run EM technology readers such as Rosslare, Uhpote or Biostar. It is especially useful as a test pack when configuring multiple readers or demonstrating system behavior to customers, since having many identical-format tokens simplifies commissioning.

Those who should look elsewhere include anyone using non-EM readers (for example MIFARE, HID iCLASS or other proprietary formats) because these fobs will not communicate with those systems. Also, if you require custom encoding or serialized management through a specific vendor service, a generic test pack may not meet that need.

Pros & Cons

Pros

• Good value for testing or short-term deployment with 50 identical EM-format fobs.
• Compact and durable blue fob size fits standard keyrings and is easy to store.
• Straightforward compatibility with common EM4200 Wiegand readers reduces setup friction for supported systems.

Cons

• Limited to EM technology readers only, so they will not work with non-EM card systems.

Specifications

Our Verdict

The 50 pcs 26 Bit EM Blue Proximity Key Fobs are a practical, cost-effective test pack for technicians and small sites running EM4200 Wiegand readers. They deliver predictable compatibility and a convenient quantity for commissioning multiple doors, though they are unsuitable if your system uses a different card technology. For anyone working specifically with EM readers, this pack represents good value and simplifies testing and short-term deployment.

Frequently Asked Questions

Will these fobs work with all access control readers?
They only work with EM technology readers using the 26 Bit EM4200 Wiegand format and will not function with non-EM systems.

Can these be encoded or customized?
These are supplied in EM4200 format for compatibility testing; contact the seller if you need help integrating them or require special encoding assistance.

Are they suitable for long term deployment?
Yes for EM-compatible installations; they are compact and durable, but verify your system uses EM4200 Wiegand before committing to long-term use.