13.56 MHz HF Smart Cards

Honeywell OmniProx compatible card

125 kHz LF C-tier format

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 Honeywell (Pro-Watch / OmniProx access). Order single spares or bulk quantities at a fraction of OEM list pricing.

How the compatible Honeywell (Pro-Watch / OmniProx access) works

The Honeywell (Pro-Watch / OmniProx access) is a dual-frequency credential operating on both 125 kHz LF and 13.56 MHz HF, so the compatible part must carry the correct data on whichever band your readers use. Its data structure is Honeywell proximity/access encoding; HF OmniProx MIFARE/DESFire; also issues Northern N10002 34-bit and NexWatch NexKey/Quadrakey (separate entries). 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 Honeywell (Pro-Watch / OmniProx access) 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 Honeywell 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

Honeywell · Honeywell Pro-Watch · OmniProx · Honeywell access · Honeywell logo card · OmniProx contactless prox

Honeywell 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. MIFARE and DESFire are registered trademarks of NXP B.V.

Honeywell (Pro-Watch / OmniProx access) — common questions

Is this a genuine Honeywell card or a compatible one?

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

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

The Honeywell (Pro-Watch / OmniProx access) 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 Honeywell (Pro-Watch / OmniProx access)?

It operates on 125 kHz LF, using honeywell proximity/access encoding; hf omniprox mifare/desfire; also issues northern n10002 34-bit and nexwatch nexkey/quadrakey (separate entries). 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.

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Order a compatible Honeywell (Pro-Watch / OmniProx access)

Send the part number or a photo of your card and reader. We verify the encoding before production and ship worldwide — including the rare formats no one else lists.