How to Replace a Lost Gate or HOA Fob

Why Gate and HOA Fobs Are Usually Easy to Replace

Residential gate systems were designed for practical, low-friction access management, and that design philosophy extends to the credentials they use. The overwhelming majority of installations built over the past three decades rely on 125 kHz passive proximity technology — a format that has been an industry standard long enough that compatible blanks are widely available and straightforward to encode. Whether your gate uses a DoorKing controller, a Linear Access unit, or an AWID panel, the underlying credential technology is almost always one of a small handful of well-documented formats.

The most common format you will encounter is 26-bit H10301, the Wiegand standard that accounts for the majority of gate fob deployments in the United States. It stores a facility code and a card number in a fixed structure that every 125 kHz reader understands. A compatible fob encoded with the correct facility code and card number will present identically to an original credential at the gate reader — there is no programming step required on the panel side, and no coordination with your HOA is needed to make the hardware function.

HOA boards and gate management companies frequently resell replacement fobs at a significant markup precisely because residents assume the process is complicated or proprietary. For most installations, it is neither. Browse our Gate & HOA Fob Replacements to see the range of formats we stock for residential gate systems.

Identify Your Fob: DoorKing, Linear, AWID, or 26-Bit

Before ordering a replacement, it helps to know which system you are dealing with. The controller brand and the credential format are often — but not always — the same thing, so a bit of identification work upfront ensures you get the right credential. If you still have an existing fob (even a neighbour's), the markings on the face or back will often tell you the brand and sometimes the card number. Our How to Identify Your Access Card or Key Fob Format guide walks through every common marking scheme.

DoorKing (DKS) systems, particularly those using the 1508-series ProxPlus readers, typically require a DoorKing compatible proximity card or fob encoded in the DKS proprietary format. This is distinct from standard 26-bit, so it is important to confirm the reader model before ordering. If you are uncertain whether your installation uses a DKS ProxPlus reader or the older DK Prox format, the reader face plate or the controller label inside the gate enclosure will usually carry a model number. The DoorKing DK Prox compatible card covers the earlier generation.

Linear and AWID systems are similarly straightforward. AWID readers are common in mid-range and commercial-grade residential gating; they support multiple bit-length formats including 26-bit, 34-bit, and 50-bit depending on the specific panel. An AWID 26-bit compatible prox card works on installations programmed for standard H10301 data, while sites that upgraded to AWID's higher-security 34-bit scheme need an AWID 34-bit compatible prox card instead. If your HOA installed AWID RBH controllers, the credential is typically 50-bit — covered by our AWID 50-bit RBH compatible card.

What Information We Need From You

To produce a compatible fob that grants access at your specific gate or building entry, we need two pieces of data: your facility code and your card number. These are the two values encoded into every 125 kHz proximity credential, and they are what the gate controller checks against its access list when you present the fob. Without both, we cannot encode a credential that will match what the panel expects.

Your facility code is a number assigned to your installation — it is the same across every fob in your community. Card numbers are unique per credential and are what distinguishes your fob from your neighbour's. Both values are typically printed on the face of an existing fob in a format like '123 / 4567' (facility code / card number), although labelling conventions vary by manufacturer. If you have access to another fob from the same system, our identification guide explains how to read those numbers correctly.

If you have lost your only fob and cannot read the numbers from a physical credential, your HOA manager or gate operator will have a record of the card number assigned to your unit — this is standard data held in any access control management system. You do not need the management company to supply the fob itself; you only need the two numbers. Once you have them, send us your facility code and card number along with the gate system brand or reader model and we will confirm the correct format before shipping.

How a Compatible Gate Fob Is Encoded

Most gate fobs at the 125 kHz frequency tier are produced on a writable carrier chip — the T5577 is the industry-standard programmable blank for this frequency range. The T5577 can be configured to emulate the electrical signal profile of the original credential format, then written with the facility code and card number. Once programmed, it transmits an RF response indistinguishable from a factory-issued fob when read by a compatible reader. Our T5577 Explained guide covers the technical details for those who want to understand what they are buying.

For formats that use more than 26 bits — such as AWID's 34-bit and 50-bit schemes — the encoding is more complex but the principle is identical: the carrier chip is configured for that specific data structure, and your facility code and card number are written into the correct bit fields. A DoorKing 1508-series ProxPlus fob is encoded with a proprietary DKS bit structure, not raw 26-bit, so using the wrong blank format would result in a credential that physically transmits but is not understood by the reader — which is why format identification comes first.

We encode every fob to order against your supplied credentials, confirm the bit structure before shipping, and include a brief verification note with your order. The credential does not require any programming or registration at the panel — it simply enters the reader's RF field and presents the encoded data, the same as any proximity fob.

Ordering Replacements — Single Fob or Bulk for an HOA Board

Individual residents typically need one replacement fob, occasionally two. The process is the same regardless of quantity: confirm the system brand and format, supply the facility code and card number, and place an order through our 125 kHz LF Proximity Cards & Fobs catalogue. Turnaround for a single encoded fob is fast, and the credential ships ready to use.

HOA boards and property managers often face a different problem — periodic bulk replacement when fobs are lost across a community, or initial credential issuance for a new phase of a development. For these scenarios, refer to our Buying Compatible Access Cards in Bulk guide, which covers how to structure a bulk order, how to supply card number ranges, and how to manage facility code consistency across a large credential batch. We supply compatible fobs for the full range of residential gate formats in quantities from a handful up to several hundred per order.

If you manage an installation that uses AWID compatible proximity credentials across multiple access points, or a community that has DoorKing controllers of mixed generations, our team can help you identify which format applies to each reader so you source the correct credential for each location. For complex multi-format sites, contact us before ordering and we will review the installation details with you.

Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, or endorsed by DoorKing, Linear, or AWID.