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Get your free estimateLinear Access Control Installation: The San Francisco Owner’s Guide
We stock and install Linear access control systems and parts across San Francisco, with most keypad, receiver, and control-board replacements running between $265 and $740 installed depending on the model and wiring condition. Same-day or next-day service is usually available, and every job starts with a written price before we touch a single wire. Most owners find out their Linear access control has failed the hard way: the keypad lights up but the gate won’t move, or the remote works at the house but not at the curb, or the system stopped recognizing the entry code sometime between Tuesday and Thursday.

Linear builds access control components that show up on thousands of Bay Area gates, from single-family driveway opens to small multi-unit entries. The parts are generally durable, but San Francisco’s fog, salt air, and older gate wiring create specific failure patterns we see every month. If your keypad is dead, your receiver won’t respond, or your system beeps but doesn’t open, you’re in the right place.
Key takeaways:
- Most Linear access control installations run $265 to $740 in San Francisco, parts and labor included.
- We stock Linear-compatible keypads, receivers, and control boards on the truck for common models.
- Same-day service available for most failures, live answer 24/7 at (628) 227-2771.
- Warranty on all work through the 365-Day Done Right Promise.
Which Linear Models This Applies To
Linear’s access control line splits into a few families, and matching the right part means knowing which one you have. The APeX series (AP-5, AP-EX) and the older UEI/ACP series keypads are the ones we see most often on San Francisco gates. Linear also makes the PRO Access line, which pairs keypads with telephone-entry and card-reader systems on apartment and shared-driveway gates.
The compatibility gotcha with Linear is this: older Linear keypads and receivers often run on 24-volt AC wiring, while newer models are built for 12-volt DC. Install the wrong voltage and you’ll either under-power the keypad so it reboots constantly, or you’ll cook the controller board inside a week. That’s why we check the transformer before recommending a replacement, not after. Another wrinkle: Linear’s multi-code receivers have DIP-switch settings that changed between generations, so a new receiver paired with a 2012-era remote won’t always talk unless the frequency and code format are both confirmed. Most Linear keypads are backlit, weather-sealed units, but the seals degrade in salt-heavy neighborhoods like the Outer Sunset or the Richmond, and once moisture gets behind the faceplate, corrosion follows.
On OEM versus aftermarket for Linear specifically: we stock genuine Linear and Linear-compatible boards, and we’ll be straight with you. For mechanical wear items like keypad faceplates and hinge pins, a quality aftermarket equivalent is often functionally identical and costs 30 to 40 percent less. For the controller board itself, the OEM part is usually the safer play, because aftermarket boards sometimes lack the exact integration Linear expects from its radio receivers and accessory modules. If your system runs a PRO Access telephone-entry unit with a cellular module, OEM is the only thing we’d install. If it’s a simple keypad-and-receiver setup, a good aftermarket part works fine and saves money.
Styles & brands we work with





Signs Your Linear Access Control Installation Is Failing
- Keypad lights but won’t trigger the gate. The keypad’s processor is alive, but the relay that sends the open signal has stopped making contact. This is the single most common Linear failure we replace, and it usually starts intermittently: the code works three times, then quits, then works again two days later.
- Remote works from the house but not the street. The receiver’s antenna is still picking up signal, but its range has dropped badly. Over time, the receiver’s sensitivity degrades, and in San Francisco’s dense neighborhoods, a weak receiver can’t punch through the RF noise from nearby car alarms, Wi-Fi routers, and PG&E smart meters along the block.
- You changed the code and now nothing works. Linear’s programming sequence is specific to each model generation. Enter the code sequence out of order on an APeX keypad and you can accidentally wipe the stored credentials instead of adding one. This is a service call we can usually resolve in under an hour, because we keep the original Linear programming manuals for every series on the truck.
- The gate chatters or opens partway and stops. The access control unit is sending a noisy or repeated signal because the relay contacts are burned. This is often mistaken for a mechanical gate problem, but replacing or rebuilding the relay fixes it without touching the gate tracks.
- Water inside the keypad housing or corrosion on the board. In fog-belt neighborhoods like the Sunset, the Richmond, and Twin Peaks, moisture eventually gets past the seal on an older Linear enclosure. Once the board shows white corrosion, it’s a matter of time, and no amount of drying it out brings it back reliably.
See the difference
Before
After
Before
After
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AfterReplacement Cost & What’s Included
In San Francisco, most Linear access control replacements fall into these ranges:
- Keypad replacement: $265 to $435 installed, depending on whether it’s a simple APeX keypad or a PRO Access unit with a card reader and display.
- Receiver replacement: $220 to $380 installed, including matching the frequency and code format to your existing remotes.
- Control board replacement: $340 to $740 installed, depending on whether it’s a single-gate board or a multi-accessory panel with telephone-entry and magnetic-lock outputs.
What drives the range is wiring condition and enclosure work. If your existing wiring is clean and the enclosure is sound, the job is a straight swap and lands at the bottom of the range. If moisture has been at it and the transformer, wiring, or the keypad needs relocation, the price rises accordingly. Every quote includes the part, the labor, and the time to test the full open/close cycle, safety edges, and any radio pairing. You’ll see the exact number in writing before we begin, and nothing gets added without your okay first.
All work is covered by our 365-Day Done Right Promise: if the installation isn’t right, we come back and make it right, no argument and no fine print.
DIY or Call Us?
Access control work is low-voltage, but that doesn’t make it safe to wing it. The keypad and wiring aren’t the dangerous part of the gate, but the gate itself is: if you wire a relay incorrectly and the gate fires while someone’s in its path, the result can be serious injury, especially with heavy sliding gates. For that reason, we don’t recommend wiring work on your own unless you’re already comfortable with multimeters, relays, and low-voltage transformers.
What you can safely do: visually inspect the keypad for moisture or damage, note the exact model number on the sticker inside the housing (that helps us bring the right part), and test whether the issue is the keypad, the remote, or the gate itself by watching if the access light responds when you press the remote. That’s ten minutes of detective work and it saves a service call’s worth of guessing.
If the board or receiver needs replacement, call us at (628) 227-2771. We’ll identify the right Linear-compatible part for your exact model, give you a written price, and most jobs wrap up in one visit.
FAQs
Five to nine years is typical in our service area, though units closer to the ocean in the Sunset or Richmond often fail earlier because salt and fog wear out the weather seals faster than inland air does.
Sometimes we can rebuild a relay or resolder a cold joint on the board for $150 to $220, but when corrosion has spread or the microprocessor is failing, replacement is the more honest fix and usually cheaper over two years.
A straight keypad or receiver swap takes 45 to 90 minutes, and a full control-board replacement with new wiring runs two to three hours. We’ll give you a window when you call, and the price is set before work starts.
Yes. We stock the parts our San Francisco customers need most often: APeX and PRO Access keypads, multi-code and frequency-matched receivers, and replacement control boards. We also carry parts for LiftMaster, Mighty Mule, and Ghost Controls, so if your system is mixed-brand, we can still handle it same day.
Call (628) 227-2771 for a free estimate on your Linear access control installation. A live person answers, day or night, and you’ll know the exact price before anything gets touched.
Written by Cody Beckman, Owner, Latch and Post Gate Repair San Francisco, at Latch and Post Gate Repair San Francisco, serving San Francisco and nearby areas.