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Before
AfterDoorKing Access Control Installation: The Alpharetta Owner’s Guide
DoorKing access control installation in Alpharetta typically runs $1,200-$2,800 for a complete keypad or telephone entry system, depending on whether we’re wiring a single-family driveway gate or a multi-tenant entry with video integration. Most residential DoorKing 1802 or 1833 series installs we can schedule within 48 hours, and we stock the common entry modules on our trucks. You’ll know it’s time when your keypad stops reading fobs, the call button goes dead, or the gate begins ignoring valid codes after rain.
Which DoorKing Models This Applies To
DoorKing has produced entry hardware since 1948, and the model numbering tells you what you’re working with. The 1802 series is the surface-mount telephone entry system you’ll see on stucco columns at Alpharetta gated communities off Windward Parkway. The 1833 is the flush-mount version, recessed into a pedestal or wall. The 1812 is the basic keypad-only unit, common on older residential swing gates near Crabapple.
We also install the 1835 PC Programmable and the 1838 multi-door controllers, though these require a data run back to a management office. The critical compatibility gotcha: DoorKing changed its keypad protocol after 2014. A post-2014 entry module will not communicate with a pre-2014 control board without a protocol adapter, and most Alpharetta HOAs we visit don’t know which generation they have until we open the box and read the board revision. We carry both adapters on the truck.
OEM DoorKing parts come out of Inglewood, California, with a 12-month factory warranty. We also install quality aftermarket equivalents from EMX and Linear where the application allows, typically saving 15-20% on hardware. We never substitute without writing the alternate part number on your quote and explaining the tradeoff.
Signs Your DoorKing Access Control Installation Is Failing
- Keypad accepts codes but the gate doesn’t move. Usually the entry module is fine; the problem is the loop detector or the relay output to the gate operator. We see this after lightning storms in Alpharetta’s spring months, when a surge fries the dry-contact relay.
- Intermittent fob reading that gets worse in humidity. The proximity reader coil is degrading. DoorKing uses a 125 kHz HID-compatible reader in most residential units, and the coil insulation cracks after 6-8 years of Georgia heat cycles. We stock the replacement reader heads.
- Call button rings the house phone but there’s no audio. The voice board has failed. On 1802/1833 units this is a separate replaceable module, not a full system replacement. We photograph the board revision before ordering.
- Gate opens for every code, or no code at all. The memory chip has corrupted. This can happen after a power outage if the backup battery is dead. We test battery voltage first; it’s a $38 part that saves a $400 module.
- Display is dim or segments are missing. The VFD (vacuum fluorescent display) has reached end of life. These run about 50,000 hours in normal conditions, but direct Alpharetta afternoon sun on a south-facing pedestal cuts that roughly in half.
Before
AfterReplacement Cost & What’s Included
| Scope | Typical Range |
|---|---|
| DoorKing 1812 keypad-only replacement | $1,200 - $1,650 |
| DoorKing 1802/1833 telephone entry, single-family | $1,850 - $2,400 |
| DoorKing 1835 PC-programmable with software setup | $2,200 - $2,800 |
| Protocol adapter (pre/post-2014 mismatch) | $180 - $240 |
| Proximity reader head replacement | $340 - $480 |
| Loop detector / relay repair | $280 - $420 |
What drives the range: conduit run length from gate to house, whether we need to core-drill masonry, and if the existing low-voltage wiring is still up to code. Alpharetta’s clay soil shifts; we’ve found conduit separations on older installs that weren’t apparent until we traced the line. Every quote is written and handed to you before we pick up a tool. Under Clause 1 of The Haven Standard, that price is the price. If we find something unexpected, we stop, photograph it, and write a revised scope. No invoice surprises.
The work carries our 365-Day Done Right Promise. If the keypad glitches, the relay chatters, or the fob range drops inside that year, we return and make it right at no charge.
DIY or Call Us?
There’s a safe middle ground. You can verify power at the pedestal (should read 16-24 VAC at the transformer), check that the backup battery holds above 12 volts, and confirm the phone line or cellular module has signal. Document what you find with photos; it saves us twenty minutes of diagnostic time.
What we don’t recommend: opening the entry module to replace the relay board, splicing into the 120 VAC feed, or attempting to reprogram the master code without the installer manual. DoorKing units store programming in volatile memory; lose power mid-program and you’re factory-reset with no resident codes. The low-voltage side is safe enough, but the line voltage and the gate operator interlock are not. We’ve been called to Alpharetta jobs where a homeowner’s DIY fix shorted the control board and turned a $280 relay job into a full module replacement.
If you’re unsure which generation you have, or if the keypad’s doing something weird that doesn’t match the symptoms above, call us at (678) 679-2152. We’ll talk through what you’re seeing and schedule a free estimate if it needs hands-on diagnosis.
FAQs
Most residential DoorKing units last 10-14 years in Alpharetta’s climate. The VFD display and proximity reader are usually the first components to fail, at roughly the 7-year mark, while the main board often outlasts them if power conditioning is decent. Georgia’s thunderstorm season and the power fluctuations that come with it are harder on electronics than the heat itself. Call (678) 679-2152 if yours is past the decade mark and showing any of the symptoms above - estimates are free.
Often yes, if the failure is isolated to the display, reader head, or relay board. We replace those sub-assemblies regularly. Full replacement makes more sense when the unit is pre-2014 (parts scarcity), the housing is cracked (moisture intrusion), or you want to add video or cellular capability that the old chassis can’t support. We diagnose first, quote both paths when both exist, and let you decide. Call (678) 679-2152 to schedule.
A straightforward replacement of an existing unit on a prepared pedestal takes 2-3 hours, including programming resident codes and testing fob range. A new install with trenching, conduit, and wire pull can run a full day or spread across two days if concrete needs cure time. We schedule measured, ordered work; we don’t promise same-day installation because the scope has to be verified on site first. Call (678) 679-2152 for a free measure and written schedule.
We stock the common failure items: proximity reader heads, VFD displays, relay boards, protocol adapters, and backup batteries. Full entry modules we order overnight from DoorKing’s California warehouse or pull from our regional supplier in Doraville. For a standard replacement, you’re rarely waiting more than a day for hardware. Call (678) 679-2152 to confirm availability for your specific model.
Key Takeaways
- DoorKing model numbers indicate mount style and feature set; the 1802/1833 split is the one most Alpharetta homeowners encounter.
- Pre-2014 and post-2014 systems need a protocol adapter to mix - a common gotcha we catch during estimate.
- Most failures are sub-assembly problems (reader, display, relay), not full system death.
- Every quote is written before work starts; every visit leaves a photo record under The Haven Standard.
- Vance Gate Repair Alpharetta is an independent service provider, not affiliated with DoorKing.
We’ve worked on DoorKing hardware since Adrian Vance was running commercial access-control sites in Queens, and that documentation habit - name what you found, name what it costs, name what you left behind - is the same one we bring to every residential job in Alpharetta. Whether it’s a single keypad on a driveway gate off Rucker Road or a multi-tenant system near Avalon, we price it in writing, install it to spec, and leave you the paperwork.
Ready to get your DoorKing system working right? Call (678) 679-2152 for a free estimate. A live person answers, 24 hours a day.
Written by Adrian Vance, Owner, Vance Gate Repair Alpharetta at Vance Gate Repair Alpharetta, serving Alpharetta and nearby areas.