Linear Access Control Installation Nationwide

Linear Access Control Installation: The Alpharetta Owner’s Guide

Linear access control installation in Alpharetta typically runs $1,200-$2,800 for a complete keypad or telephone entry system, depending on whether we’re running new low-voltage cable or tying into existing gate motor wiring. Most residential jobs we price same-day and schedule within 48 hours; commercial sites with multiple entry points usually need a walk-through first. Homeowners usually figure out something’s wrong when the keypad stops accepting codes, the call button goes silent, or the gate opens for anyone who pushes the button - no code required.

Call (678) 679-2152

Which Linear Models This Applies To

Linear access control spans three main series you’re likely to find on Alpharetta gates: the ACP (Telephone Entry) line, the AK (Keypad) series, and the RECP (Receiver/Control) boards that tie everything back to the gate operator. The ACP009, ACP011, and ACP012 telephone entry systems are common on subdivision gates around Windward and the Country Club of the South; the AK-11 and AK-31 keypads show up on single-family driveways where the homeowner wants basic PIN access without phone-line dependency.

Identifying your unit takes two things: the white Linear label on the back or underside of the housing (model number and serial) and a quick voltage check at the terminal block. ACP units run 24V AC from the gate motor’s transformer; AK keypads can run anything from 12V DC to 24V AC depending on the revision. The gotcha we see in Alpharetta: early AK-11 units shipped with a 3-wire harness that won’t mate to newer 4-wire retrofit boards without an adapter pigtail. OEM Linear parts ship with that pigtail; most aftermarket equivalents don’t, and the homeowner ends up making a second trip to the supply house.

We stock both OEM Linear and select aftermarket equivalents on our truck, but we specify which one we’re quoting before we open the box. The Haven Standard, Clause 1: have it in writing.

Signs Your Linear Access Control Installation Is Failing

• Keypad accepts codes but the gate won’t move. Usually the RECP receiver board isn’t passing the dry-contact signal to the gate operator. We check for 24V at the board first; if it’s present and the relay won’t click, the board’s output transistor is burned. Common after Georgia thunderstorm season, when power fluctuations hit hard.
• Intermittent operation - works at 9 AM, dead by 3 PM. This is often a failing isolation transformer in the ACP power supply, or corroded terminal screws where the low-voltage cable enters the keypad housing. Alpharetta’s humidity swings from March through June accelerate corrosion on outdoor enclosures that aren’t sealed with dielectric grease during original installation.
• Call button rings the house, but you can’t buzz the gate open. The telephone entry’s relay coil is functional for inbound audio, but the outbound dry contact to the gate motor has failed. We see this on ACP009 units past the 8-year mark; the relay contacts pit from arcing and eventually won’t close under load.
• Gate opens without any code entered. This one’s a security issue, not just a convenience problem. Usually the RECP board has a shorted input or the wiring between keypad and receiver has been nicked, creating a phantom ground. We’ve found this twice on Alpharetta properties after landscaping crews cut too close to the conduit run.
• Keypad display is dim or flickering. Backlight inverter failure on older ACP units, or low input voltage from an undersized transformer. The AK-31 draws more current in cold weather when the LED backlight runs at full intensity; a 16V AC transformer that “worked fine for years” finally falls out of spec.

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Replacement Cost & What’s Included

What drives the range: whether we’re reusing existing conduit or trenching new, how many conductors are already pulled (2-wire vs. 4-wire), and whether the gate operator’s transformer has enough spare capacity for the new unit’s draw. We check that before we quote. The price we write down is the price you pay; we don’t start work until you’ve signed the scope. Under our 365-Day Done Right Promise, if the new keypad doesn’t communicate reliably with your gate motor, we come back and make it right - no invoice, no argument.

Every Linear access control installation we complete includes a documented photo record: terminal connections, wire colors to pin numbers, transformer load reading, and the limit-switch position if we touched the operator. You get a copy; we file the master. That’s Clause 4 of the Haven Standard.

DIY or Call Us?

There’s a safe middle ground here, and then there’s the part that can turn expensive fast.

What you can check safely: Verify input voltage at the keypad terminal block with a multimeter (AC or DC depending on your model - the label says which). Look for obvious corrosion, loose screws, or a keypad housing that’s cracked and letting water reach the circuit board. Check whether the gate operator responds to its own remote or manual switch; if it does, the problem is likely upstream in the access control, not the motor.

Where DIY goes wrong: Running new low-voltage cable through existing conduit without a pull string can leave you with a stuck wire and no way to fish it out. Miswiring a 24V AC transformer to a 12V DC keypad board will fry the processor before you finish tightening the screw. And if you’re working on a telephone entry system tied to a phone line or cellular module, programming the call-forwarding sequence requires the installer code - which most homeowners don’t have, because the original installer never left it.

We’re not affiliated with Linear; we’re an independent service provider who works on nine automation brands including theirs. If you want a second opinion on an estimate you already have, bring the paperwork. We’ll review it at no cost.

Call (678) 679-2152 when you’re ready. A live person answers, 24 hours a day.

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