125 kHz LF Proximity Cards & Fobs

Viking Proximity Fob Compatible

125 kHz LF

A compatible blank credential built on the matching T5577 / EM4305 platform — supplied ready for your own system to enrol as a drop-in spare for Viking Electronics Viking (gate / AES). Order single spares or bulk quantities at a fraction of OEM list pricing.

How the compatible Viking (gate / AES) works

The Viking (gate / AES) is a 125 kHz low-frequency proximity credential — the band most legacy prox readers use. Its data structure is ASK; 64-bit Viking format, 24-bit ID payload + checksum. When you present a credential, the reader decodes that exact structure and passes it to your access-control panel as a card number it recognises.

Because the Viking (gate / AES) is a secured smart credential, it is designed so the encryption keys stay under your control. We supply compatible blank credentials built on the matching T5577 / EM4305 platform, ready for your access-control system or integrator to enrol exactly as it would credentials ordered through the original vendor's channel. You get drop-in spares and bulk stock at a fraction of OEM pricing — and because your own system writes the keys, every credential inherits your site's security.

To order, tell us the part number or format printed on your existing Viking Electronics card, along with your facility code and card-number range, and our specialists confirm the encoding before anything ships. Bulk and reorder quantities are welcome — pricing is a fraction of OEM list, and every credential is verified to read on your existing equipment.

Also known as

Viking · Viking 125khz · Viking prox · AES prox

Viking Electronics and all other brand and product names are trademarks of their respective owners. Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, sponsored by, or endorsed by these companies. Brand and format names are used only to identify the systems our products are compatible with.

Viking (gate / AES) — common questions

Is this a genuine Viking Electronics card or a compatible one?

It is an independently manufactured compatible credential — engineered to the same specification as the Viking (gate / AES) so it reads identically on your existing readers, but it is not an Viking Electronics-branded product. Security ID Systems is independent and not affiliated with Viking Electronics; your access-control panel accepts the credential exactly the same way.

How do you supply a replacement for my secured Viking Electronics smart card?

The Viking (gate / AES) is a secured smart credential, so the encryption keys stay under your control. We supply compatible blank credentials on the matching T5577 / EM4305 platform that your own system or integrator enrols — exactly like ordering blanks through the original vendor's channel, at a fraction of the cost. Because your system writes the keys, the credential inherits your site's security.

What frequency and format is the Viking (gate / AES)?

It operates on 125 kHz LF, using ask; 64-bit viking format, 24-bit id payload + checksum. Matching that exact frequency and data structure is what makes a compatible credential work — a card on the wrong band or bit length simply will not read.

Why is the Viking Electronics format hard to find?

The Viking Electronics format is one of the specialist, proprietary credentials that many card vendors don't offer. Security ID Systems focuses on exactly these specialist and legacy formats, encoding a compatible credential to the exact specification your readers already accept.

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Order a compatible Viking (gate / AES)

Send the part number or a photo of your card and reader. We verify the encoding before production and ship worldwide, including specialist and legacy formats.