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Linear Access Control Installation: The Northridge Owner’s Guide
We install, replace, and program Linear access control systems across Northridge, and in most cases the work is done same-day with the part on our truck. A typical Linear access control installation in Northridge runs $285 to $540 for entry keypads and card readers, and $450 to $950 when we’re adding a full system including the controller, receiver, and power supply. The most common call we get sounds something like this: the keypad stopped accepting the code, or the exit loop quit sensing the car, or the whole system went dead after a rainstorm. If that’s where you are, this page will tell you exactly what you’re dealing with and what it costs to make it right.

Key Takeaways:
- We stock Linear-compatible access control parts on our trucks and install them on a single visit in most Northridge jobs.
- Installed pricing is quoted and agreed before work starts, never after.
- Every installation is covered by our written 90-Day Done Right Promise.
- We’re an independent gate company. We’re not affiliated with Linear, but we service their equipment daily.
Which Linear Models This Applies To
Linear access control covers a lot of ground, and the part that fails is usually not the one the homeowner thinks it is. We work on the Linear AE-1000, AE-2000, and AE-500 telephone entry systems, the AK-11 and AK-21 digital keypads, the AP-4 and AP-5 external proximity readers, the MGR and MGT gate receivers, and the DTA-1 and DTA-2 plug-in transmitters. Each of these talks to a different piece of the system, and the gotcha that burns most people is this: a Linear keypad from 2012 is not always compatible with a Linear receiver from 2019, even though the brand name on both is the same. Linear has changed frequencies and coding formats over the years, so we identify the exact part by the model label, the wire count at the terminal block, and the frequency printed on the receiver module before we quote anything.
On the OEM-versus-aftermarket question: for Linear specifically, we’ve had better long-term results with genuine Linear control boards and keypads than with the offshore replacements. The aftermarket keypads we’ve tried in Northridge sun fade within two summers and the membrane buttons crack. A genuine Linear keypad in direct San Fernando Valley sun typically lasts 5 to 7 years before the buttons start misreading. We stock both OEM and quality aftermarket parts on the truck, but we’ll tell you straight which one we’d put on our own gate.
We’re an independent gate service company, not a Linear dealer or affiliate. We stock Linear parts because they’re common in the Valley, and we work on them alongside LiftMaster, Mighty Mule, Ghost Controls, and the other major brands we service.
Signs Your Linear Access Control Installation Is Failing
- The keypad accepts the code but the gate doesn’t move. This points to the receiver or the relay on the control board, not the keypad itself. When we open the box, we usually find a burned relay contact or a receiver that’s drifted off frequency.
- The keypad beeps but won’t take the code at all. The keypad’s internal memory has failed, or the wiring from the keypad to the controller has corroded at the splice. In Northridge, we see moisture in the conduit more often than a truly dead keypad.
- The exit loop stopped sensing the car. The loop detector in the Linear controller has failed, or the saw-cut in the driveway has cracked and broken the loop wire. This is one of the most misdiagnosed access control failures we see.
- The whole system works intermittently after rain. Water is getting into the enclosure or a splice. Linear enclosures are decent, but the gaskets harden after a few Valley summers, and once the seal goes, the board is on borrowed time.
- The phone entry system rings but won’t open the gate from the house. The relay on the AE-1000/AE-2000 board is sticking, or the programming got wiped by a power surge. We see this a lot after the Santa Ana wind events knock out power in Northridge neighborhoods.
Replacement Cost & What’s Included
Here’s what Linear access control installation costs in Northridge, installed:
| Service | Installed Price Range |
|---|---|
| Linear AK-11 or AK-21 keypad replacement | $285 - $420 |
| Linear AP-4 or AP-5 proximity reader add-on | $310 - $460 |
| Linear MGR/MGT receiver replacement | $260 - $395 |
| Linear AE-1000/AE-2000 telephone entry unit | $750 - $1,100 |
| Full access control system (controller, receiver, keypad, loop) | $1,450 - $2,800 |
The range depends on the condition of the existing wiring, whether the enclosure needs replacing, and how far the keypad sits from the controller. Wiring that’s been spliced three times by three different handymen takes longer to sort out than a clean original install, and that time is reflected in the price. What you’ll always get from us is a written line-item quote before any work begins. No surprises on the bill, no inflated parts markup, and every installation is covered by our written 90-Day Done Right Promise. If it’s not right, we come back and make it right. That’s the deal, on paper, every time.
DIY or Call Us?
Most Linear access control components are low-voltage, which means the shock risk is minimal compared to a gate motor or a spring replacement. That said, the danger here is different: you can miswire a keypad, short the control board, and turn a $300 keypad swap into an $800 controller replacement. We’ve seen it happen, and it’s almost always the same story: the homeowner watched a video, matched the wire colors, and missed the fact that Linear changed terminal assignments between production years.
What you can safely do without opening the control box: check that the keypad has power (the backlight or LED is on), check for obvious physical damage to the keypad face or enclosure, and confirm the breaker for the gate circuit hasn’t tripped. Anything beyond that involves working inside the controller, and that’s where a misstep gets expensive. If you’re in Northridge and the keypad won’t take the code, call us at (925) 966-4150. We’ll diagnose it over the phone, tell you what we think it is, and give you a price before we roll the truck.
Victor Salinas has been working on gates in the San Fernando Valley for close to three decades now, and he’ll tell you the same thing he tells every homeowner: the gate should open when you need it to and stay put when you don’t. Everything else is just getting there.
FAQs
A genuine Linear keypad in direct sun in Northridge typically lasts 5 to 7 years before the membrane buttons start cracking or the internal components fail from heat. Aftermarket units often go 2 to 3 years at best. If yours is older than seven years, replacement is usually the better call than repair. Call (925) 966-4150 and we’ll confirm what you have and what it’ll cost.
In most cases, we replace rather than repair. The failure is usually in the sealed membrane or the internal circuit board, and once those go, a repair is just buying you months, not years. We’ll always check the wiring and connections first, because sometimes the keypad is fine and the problem is a corroded splice in the conduit. Call us and we’ll sort it out.
A straightforward keypad or receiver swap takes under an hour once we’re on site. A full system install with a new controller, keypad, and exit loop typically takes 3 to 5 hours. We stock the common Linear parts on the truck, so most Northridge jobs are finished on the first visit.
We stock Linear keypads, receivers, controllers, exit loops, and power supplies on our trucks, which means most access control installations in Northridge happen the day you call. If you have an unusual Linear model we don’t have on hand, we’ll source it and schedule the install within a few days. You don’t need to order anything yourself.
If your Linear access control system is acting up in Northridge, call us at (925) 966-4150. A live person answers, day or night, and we’ll give you an honest read on what’s wrong and what it costs to fix. Free estimates, upfront pricing, and a written 90-Day Done Right Promise on every job.
Written by Victor Salinas, Owner, Ironworks Gate Co. at Ironworks Gate Co., serving Northridge and nearby areas.





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