How Many Codes Can a Gate Keypad Hold, and How Do I Change Them?
The honest answer depends on which part of the system holds the code. On the gate operators Mustang installs, a built-in keyless entry keypad holds 2 PINs, the standard wireless receiver holds 50 remotes and keypads combined, and a commercial access control receiver holds up to 1,000. Here is where each number comes from, how adding a code actually works, and why erasing one code sometimes means erasing all of them.
There is no single number, because “a gate keypad” can mean three different pieces of memory. On the LiftMaster CSW24UL and CSL24UL gate operators Mustang installs: the operator’s own built-in keyless entry holds 2 four-digit PINs (adding a 3rd erases the 1st); the standard wireless receiver that ships with the operator holds 50 devices total, shared between Security+ 2.0 remote clickers and KPW250 wireless keypads in any mix; and a separate commercial access control receiver (model STAR1000) holds up to 1,000 devices, the same mix, sized for gated communities and job sites with many users. None of the three has a documented way to erase just one code without erasing the whole category — the manual’s own erase procedure is “Erase All Transmitter and Keypad Codes.” Mustang Fencing Services installs and programs gate automation and access control in Galveston County, and sizes the receiver to how many people actually need their own code.
Source: LiftMaster CSW24UL and CSL24UL installation manuals, Programming and Erase All Transmitter and Keypad Codes sections (pp.26-29), Accessories (p.55).
Where a gate keypad’s codes actually live
People ask “how many codes can a gate keypad hold” as if every keypad were the same part. On the operators Mustang actually installs, there are three different places a code can be stored, each with its own printed limit:
- Built-in keyless entry (Model 878MAX accessory). This wires straight into the gate operator — no separate receiver box. The manual allows up to 2 keyless entries, one 4-digit PIN each. Program a 3rd and the 1st is erased automatically to make room.
- Standard wireless receiver. This comes with the operator and is what learns Security+ 2.0 remote clickers and KPW250 wireless keypads over radio. It holds 50 of those devices total, in any mix of remotes and keypads. A keypad counts as one device in this pool; whether that keypad can itself hold several people’s PINs is a question for that keypad’s own manual, which Mustang hasn’t copied into this guide because it varies by model.
- Commercial access control receiver (Model STAR1000, sold separately). Built for bigger properties, it holds up to 1,000 devices, the same mix of remotes and wireless keyless entries.
A basic home gate rarely needs more than the built-in keyless entry or the standard receiver. A gated community, an apartment property, or a job site with rotating crews is usually what pushes someone toward the commercial receiver. See gate automation and access control for how Mustang sizes this during an estimate.
Adding a code or a remote, step by step
Learning a new remote or a KPW250 wireless keypad into the operator’s receiver uses the same LEARN button, whether you want one button, several buttons, or a brand-new keypad to work:
- Press and release the LEARN button. The operator beeps and the green XMITTER LED lights. A 30-second window opens to finish programming.
- Choose how the device should behave — a single button for open only, a single button for open/close/stop, or three separate buttons each doing one thing.
- Press the button (or complete the keypad’s own learn sequence) you want assigned.
- The operator beeps and the LED turns off when it’s stored. Repeat from step 1 for the next remote or keypad — nothing already learned is disturbed.
That is the process for teaching the operator a new device. Setting the actual PIN digits on a keypad that already has its own multi-user memory is a different step, documented in that keypad’s own manual — Mustang hasn’t guessed at that procedure here since it genuinely varies by keypad model.
Three ways to program a device (LEARN button)
| Option | What it does | Steps |
|---|---|---|
| Single button, OPEN only | One remote button opens the gate; Timer-to-Close can handle closing it | Press LEARN (XMITTER LED lights) → press the button to program |
| Single button, OPEN/CLOSE/STOP | One remote button cycles open, close, and stop | Press LEARN → press OPEN → press the button to program |
| Three buttons, OPEN/CLOSE/STOP | Each of 3 buttons does one job | Press LEARN → press OPEN, CLOSE, or STOP → press the matching button |
LiftMaster CSW24UL/CSL24UL manuals, pp.26-27. Programming mode times out after 30 seconds if no button is pressed.
Which capacity fits your gate?
Count the people and vehicles who need their own way in, and this checks it against the three capacities printed in the LiftMaster manuals for the swing and slide operators Mustang installs. It does not set up or change any actual code.
Capacities: LiftMaster CSW24UL/CSL24UL manuals — built-in keyless entry, 2 PINs; standard receiver, 50 total remotes + KPW250 keypads; commercial STAR1000 receiver, up to 1,000. A keypad’s own per-user PIN memory (if any) is set by that keypad’s own manual, which this tool does not have.
Changing or removing a code: what the manual actually allows
The current advice floating around online is that one person’s code can always be deleted “without disrupting access for anyone else.” On the gate operators Mustang installs, that is only true if the specific keypad or receiver you bought is built for it — it is not true of the operator’s own base memory. The manual’s index lists exactly four erase procedures, and every one is all-or-nothing for its category:
- Erase All Transmitter and Keypad Codes — wipes every learned remote and keypad from the 50-device receiver at once.
- Erase Limits — wipes the gate’s open/close travel limits (unrelated to codes, but the same all-or-nothing pattern).
- Erase Gateway — wipes all wireless learned devices, including transmitters, keypads, and any dual-gate programming.
- Erase Monitored Entrapment Protection Devices — a safety-sensor reset, also all-or-nothing.
There is no “erase just this one remote” or “erase just this one keypad PIN” procedure in the manual. In practice, that means on the standard receiver, removing one person’s access means erasing all 50 slots and re-teaching everyone else’s remote or keypad, one at a time, using the steps above. The 2-PIN built-in keyless entry is simpler but blunter: there’s no delete step at all, just the rule that a 3rd PIN overwrites the 1st.
If per-person code management — adding and dropping individual tenants or contractors without touching anyone else — is the actual goal, that is what the commercial access control receiver and dedicated multi-user keypads are for. Confirm that specific feature with the product’s own manual before buying on the assumption it includes it; this guide won’t claim it where Mustang hasn’t verified it in writing.
What Galveston customers say
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Very professional and friendly. Gotten automatic gates done and they are done to perfection! Thank you
had an excellent experience with mustang fencing From the initial consultation to the final installation, the team was professional, punctual, and attentive to detail. They helped me choose the perfect fence style to match my property and ensured everything was installed with precision. The quality of materials is top-notch, and the fence has completely transformed the look and security of my home. I highly recommend mustang services to anyone looking for reliable and high-quality fencing services!
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Questions we get about this
How many codes can a gate keypad hold?
How do I change the code on my gate keypad?
Can I delete just one person’s code without affecting everyone else?
What happens if I program a third keyless entry code?
How many remotes and keypads can one gate operator support?
What if I need more than 50 codes, like for an apartment property?
Sources
Checked October 13, 2026. Rules change, so confirm with the City before you build.
- LiftMaster CSW24UL Installation Manual (Chamberlain Group) — Remote Controls / keyless entry capacity (p.26); LEARN-button programming options (pp.26-27); Erase All Transmitter and Keypad Codes, Erase Limits, Erase Gateway (pp.28-29); Gate Hold Open / CPO 4-digit PIN (p.28); accessories including 878MAX, KPW250, STAR1000 (p.55).
- LiftMaster CSL24UL Installation Manual (Chamberlain Group) — Confirms the same “50 remote controls or KPW250 keypads and 2 keyless entries” capacity on the slide-gate operator.
Not sure which setup fits your gate?
We’ll look at how many people actually need their own way in — family, staff, rotating contractors — and spec the keyless entry, receiver, or commercial access control that matches, in writing, before any work starts. Free on-site estimates across Galveston County.