Access Control Installation in Texas, Engineered Door by Door

Texas access control from a crew that can stand at your doors

People searching for access control installation in Texas usually have one of three problems: a new suite that needs card readers before opening day, an office that has outgrown a drawer full of keys, or an older system that no longer gets parts or updates. EVOTECH IT LLC takes on all three, with one plain limit stated up front. Our technicians perform on-site installation in the Greater Houston area, which covers Houston, Katy, Sugar Land, Richmond, Fulshear, Cypress and the communities around them.

That boundary is deliberate. Access control is not equipment you drop off at the loading dock. It is wired into door frames, lock bodies, the fire alarm panel and your network, and when a strike refuses to release at seven in the morning, someone has to be able to drive there. A company in Dallas, Austin or San Antonio is better served by a qualified installer near its building than by a promise we could not keep from Katy.

Inside our area the work ranges from a single-door retrofit at a dental office to multi-door installations in warehouses and flex space along the I-10 and Grand Parkway corridors, pedestrian gates at commercial yards, and interior doors that deserve their own audit trail, such as server closets, medication rooms and records storage. We are a licensed and insured low-voltage contractor, we have been in the trade since around 2004, and our customers rate us 5.0 on Google.

Texas regulates who may install security systems, and electronic access control falls inside that work. Whoever you hire, ask for their license and proof of insurance before anyone drills a frame.

The door decides the hardware, not the catalog

Two doors in the same building can need completely different parts. Before we price anything, we walk every opening on the plan and write down what it is made of and how people use it. That door schedule becomes the backbone of the proposal, and it is the document most rushed installs never produce.

What we record at each opening:

• Frame and door material. A hollow metal frame accepts an electrified strike cleanly. An aluminum storefront door with narrow stiles often cannot, which pushes the design toward an electrified exit device or, as a last resort, a magnetic lock.
• The existing lockset. A cylindrical lever, a mortise lock and a panic bar each have a different electrified counterpart. Adding electrified trim to a healthy mortise body can save the door; forcing a strike onto the wrong latch wastes it.
• Swing, handing and direction of travel. Which side is secure, which way the leaf opens, and whether the door sits on a required exit path.
• A route for wire. A lock mounted in the door leaf needs a power transfer hinge or concealed electric transfer to carry current across the hinge. We check whether the frame and the ceiling above allow a clean path.
• Closer condition. A heavy door on a tired closer will not latch, and no lock can secure a door that never fully shuts.

When an opening needs new electrified hardware, we coordinate with your door hardware supplier or locksmith so the order matches each door’s handing and preparation. A bad hardware choice cannot be fixed later with better software.

Trapping someone inside is the failure that matters most

A door that lets a stranger in is a security problem. A door that will not let an employee out during a fire is a life-safety problem, and it outranks every convenience feature on the spec sheet. That ordering drives our designs.

Most exit doors should stay mechanically free in the direction of egress: turn the lever or push the bar and you are outside, whatever the access system is doing. Strikes and exit devices make that easy because they only control entry from the secure side. Magnetic locks are different. They hold the door closed with electricity alone, so the building code’s sensor-release requirements apply: a motion sensor on the egress side that releases the lock as someone approaches, a manual push-to-exit button nearby that interrupts lock power directly rather than through the controller’s logic, and automatic release when power is lost.

When a building has a fire alarm system, locks on the egress path generally have to release when the panel goes into alarm. Your fire alarm contractor provides a relay from their panel; we wire that relay to drop power to the affected lock supplies, label it at both ends and test it with them during commissioning. We do not design or modify fire alarm systems. That work belongs to a licensed fire alarm company, and we say so rather than blurring the line.

Requirements vary by jurisdiction and code edition, and the local fire marshal has the final say. On permitted projects we build to the approved drawings and flag any door where the hardware shown does not match how the space is really used. Delayed-egress arrangements, like those in some healthcare settings, need explicit approval; we never install them on assumption.

Retire the 125 kHz badge before someone copies it

Plenty of Houston-area businesses still hand out the thick 125 kHz proximity cards that came with a system installed fifteen years ago. Those cards broadcast a fixed number with no encryption, and inexpensive handheld copiers can duplicate one from a short distance, sometimes without the owner noticing. If your badges are that type, the lock on your door is only as strong as the cheapest cloner sold online.

For new installations and upgrades we specify 13.56 MHz smart credentials that use mutual authentication, such as MIFARE DESFire EV2 or EV3, or mobile credentials on employees’ phones over Bluetooth or NFC. Multi-technology readers can accept old and new cards at the same time, so staff can be re-badged over a few weeks rather than in one chaotic Monday morning.

Wiegand versus OSDP

The cable between reader and controller matters as much as the card. Classic Wiegand wiring is one-way and unencrypted, and a small device clipped into the reader’s cable can harvest credentials as people badge in. OSDP, the Open Supervised Device Protocol maintained by the Security Industry Association, runs over a two-wire RS-485 pair, talks in both directions, lets the controller notice when a reader has been pulled off the wall, and supports an encrypted Secure Channel. When both the controller and readers support it, we install OSDP with Secure Channel switched on. Buying OSDP hardware and leaving encryption off is a shortcut we see often.

Reader placement

Readers go on the latch side, at a height a person using a wheelchair can reach, clear of metal mullions that can detune some reader antennas. On exposed entries facing the afternoon sun or wind-driven rain, we choose readers rated for outdoor use and add a manufacturer-approved hood where one exists.

Cable, power supplies and what happens when the grid goes down

A typical controlled door carries four circuits back to the controller: the reader, lock power, a door position switch that reports whether the door is truly closed, and a request-to-exit input that tells the system a person is leaving so it does not log a forced entry. We pull cable for each, sized for the distance and the current rather than whatever happens to be on the truck.

• Reader: shielded multi-conductor cable for Wiegand, or a shielded twisted pair for OSDP, which tolerates far longer runs than Wiegand’s usual limit of a few hundred feet.
• Lock power: heavier conductors, because voltage drop over a long run produces a strike that buzzes without releasing. On long runs we lean toward 24-volt hardware, which draws half the current of a 12-volt equivalent for the same power.
• Door position and exit request: light-gauge conductors, supervised with end-of-line resistors when the panel supports it, so a cut wire reports as a fault instead of a quietly closed door.

Power supplies and long outages

Locks are fed from dedicated supplies with individually fused outputs, so one shorted strike cannot take down every door on the floor. Each supply carries a sealed battery sized to the lock load and the runtime you need. That decision interacts with fail-safe and fail-secure choices. During the multi-day outages that followed Hurricane Beryl in July 2024, a fail-safe maglock whose battery ran flat simply unlocked, while a fail-secure strike kept the perimeter closed and still let occupants out. We walk through that trade-off door by door, because the right answer for a clinic’s front entrance is not the right answer for its drug storage.

Controllers, and the switch that connects them to the network, also go on backup power. We document which supply feeds which door so facility staff are not guessing in the dark.

Choosing where the system’s brain lives

Access control software sits in one of two places, and both are legitimate choices.

Cloud-managed platforms host the database and the administration portal online. Door controllers still make decisions locally, so doors keep working when the internet drops, but managers add and remove people from a browser or phone, and a business with several locations sees them in one view. The cost is an ongoing subscription, usually per door or per site, and a dependence on the vendor continuing to support the product.

On-premise platforms run on a server or appliance you own. There may be no recurring per-door fee, and event data never leaves the building, but somebody has to patch that server, back it up and keep its software licensed. For a single site with a capable IT provider, that can be the better long-term fit.

The questions we ask before recommending either:

1. Who will add and remove badges, and from where?
2. How many sites exist today, and how many are planned in three years?
3. Should access events connect to video, intrusion alarms, elevator floor control or visitor sign-in?
4. Does anyone on your team want to own a server?
5. If you change platforms later, what happens to the credentials and controllers?

The last question matters more than most buyers expect, because proprietary card formats and controllers can tie a building to one vendor for years. We favor open credential formats and controller hardware that more than one software platform can manage, so the money spent on wire and door hardware outlives any single software contract. When door events should line up with recorded footage, we plan that with our security camera installation work from the first site visit.

Our installation sequence, from door schedule to handover

1. Site walk and door schedule. We open and close every door, photograph frames and hardware, and note power, network and ceiling access at each opening.
2. Design review. You receive a door-by-door plan listing lock type, fail mode, reader, credential, power supply location, cable route and any fire alarm interface points.
3. Hardware coordination. Electrified locks, exit devices and transfer hinges are ordered to match each door’s handing and prep, which avoids the classic delay of a lock that arrives for the wrong swing.
4. Rough-in. Cable is pulled and labeled at both ends, supported properly above ceilings or run in conduit where exposed, and kept away from line-voltage circuits.
5. Trim-out. Readers, locks, door contacts and exit sensors are mounted, frames are drilled cleanly and exterior penetrations are sealed against water.
6. Programming. Schedules, access groups, holidays and alerts are built around how your people actually work rather than a default template.
7. Commissioning. Every door is tested for a valid badge, an invalid badge, door held open, door forced, exit request, loss of power and, where wired, fire alarm release. We record the results.
8. Handover. Administrators learn to add and delete users, and you receive the as-built door schedule, the cable labeling key and a power supply map.

Door hardware is only as dependable as the cable feeding it. Our low-voltage wiring page explains how we route, support and label those runs.

Retrofits we get called in to correct

A fair share of our access control calls involve repairing someone else’s installation. The same faults show up again and again:

• Maglocks with no motion release or manual button. Quick to install, and a genuine hazard for anyone trying to leave in a hurry.
• No door position switch. The software reports the door as secure because it sent a lock command, while the door itself is propped open with a trash can.
• Strikes fed by a plug-in transformer. They work on day one and fail in August, when an unventilated closet bakes the adapter.
• Exit devices with no power transfer. Loose cable looped across the hinge side breaks within months of daily traffic.
• Default passwords and controllers exposed to the internet. We place controllers on their own network segment and change every credential at install.
• No record of who holds a badge. If a former employee’s card still opens the back door, the system is decoration. We audit active credentials during every upgrade.

Most of these can be corrected without replacing the entire system, and we will tell you which parts are worth keeping.

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