Mobile-Controlled Home Security in Katy, TX 77494: Put the Alarm You Already Have on Your Phone

Why the alarm in so many 77494 houses stopped talking

Before recommending anything, we work out which of these happened. Often it is more than one.

• The phone line is gone. Older panels reported by dialing out over a landline, through a jack usually labeled RJ31X. When the household moved to fiber or cable voice, the dialer lost its line. The keypad may still chirp, but nothing leaves the house.
• The cellular radio is obsolete. Communicators added in the 2000s and 2010s often ran on 2G or 3G. US carriers retired their 3G networks in 2022, and those radios went silent with them.
• The battery is exhausted. The sealed lead-acid battery in the cabinet generally lasts a few years, and less in a garage closet that cooks every Katy summer. It shows up as trouble beeps, a keypad that blanks during a power blip, or a panel that reboots itself.
• Nobody knows the codes. A previous owner’s monitoring contract ended, the master code left with them, and the original dealer locked the installer programming code.

Reading the old wiring before we trust it

Hardwired alarms of that era rest on a simple, testable idea. Each zone is a loop of wire from the panel out to one or more door or window contacts and back, normally terminated at the last device by what installers call an end-of-line resistor. With the door shut, the panel measures that resistor. Open the door and the loop opens; cut the wire and it opens; short the wire and the reading collapses. That supervision is what makes a wired system hard to defeat quietly.

On the survey we:

1. Open the cabinet, photograph the terminal strip, and identify the panel and its keypad bus.
2. Lift each zone and read it with a meter, noting resistance with the door closed and open.
3. Walk every door and watch its zone change state at the keypad, labeling as we go.
4. Check the siren, any wired motion detectors, and whether smoke detectors were connected to the panel rather than being the builder’s standalone alarms.
5. Look for zones that were prewired but never finished; window cables rolled up behind the drywall are common in homes of this age.

A zone that reads correctly and follows its door is reusable. One that reads open with the door closed usually has a failed contact or a broken splice, which we trace before deciding whether to repair it or swap in a wireless contact.

Three ways to put a wired system on your phone

All three keep the part of the old system that was hardest to install: cable already fished through finished walls. The first option is the least disruptive but leaves you with the old keypads; the second gives you the cleanest modern system; the third is the most flexible about where things live. We recommend one after the survey, never before it.

Where a 2000s-era package leaves you exposed

Alarm packages of that period were built around doors. The upgrade is the right moment to cover what they skipped:

• Tall family-room glass. Two-story living rooms with walls of windows are common in Cinco Ranch-era plans, and a window that does not open was never given a contact. Glass-break detection covers it.
• The overhead garage door, rarely zoned back then, which can now report open or closed to your phone.
• Side yard and pool gates. In neighborhoods full of backyard pools, a gate contact or a side-yard camera tells you when someone walks in who should not.
• Second-floor windows above a porch or patio roof.
• Cameras. Homes of this age usually have phone and coax cable to rooms but nothing to the eaves, so camera cable goes through the attic. The attic over the garage is often the easiest route to the front elevation.

Katy details that change how the system is configured

• Gated sections. If your street is behind a gate, the monitoring account’s premises notes need access instructions, or a responding officer ends up waiting at the entrance.
• More than one jurisdiction. 77494 does not sit under a single agency. Depending on which side of a county or city line your address falls, a different department responds and permit rules can differ, so the monitoring account must name the right one.
• Commuter mornings. Households heading east on I-10 toward the Energy Corridor or downtown benefit from a reminder when the last phone leaves with the system disarmed, rather than trusting whoever walked out last.
• Heat. If the alarm closet is an unconditioned garage space, we move the new battery or communicator somewhere cooler where possible.
• Long trips. A house-sitter code that expires on the day you return is far easier to set from an app than from a fifteen-year-old keypad.

Upgrade errors we are called in to correct

1. A new panel wired in without matching the old end-of-line resistor values, so every zone shows a fault on day one.
2. A cellular communicator mounted inside the steel cabinet, which blocks much of its signal. It belongs outside the can or on an external antenna.
3. Old keypads left on the wall, lit and beeping but connected to nothing, confusing everyone in the house.
4. Panel-connected smoke detectors disconnected during the swap without anyone noticing that fire monitoring had ended.
5. A tired lead-acid battery moved from the old panel into the new one.

How EVOTECH runs a Katy alarm-to-app upgrade

1. Survey the existing system as described above and show you which zones are reusable.
2. Recommend one of the three approaches with an itemized quote that keeps reused wiring and new equipment on separate lines.
3. Record every zone’s old label and its new name before anything is disconnected.
4. Install the new panel, communicator or takeover module, and retire or replace the keypads.
5. Add the glass-break, garage, gate and camera coverage you approved.
6. Register the app account to you and test each zone from your own phone.
7. If you choose monitoring, run a coordinated test with the monitoring center so every signal arrives under the right zone name.

What decides the size of the job

• How many existing zones test good.
• Whether the current panel can stay, or is locked or obsolete.
• Communicator only, panel replacement, or a takeover module.
• New keypads or a touchscreen, and how many.
• Added glass-break, garage, gate and camera coverage, and attic access for camera cable.
• Whether panel-connected smoke detection has to be carried over.

The quote shows, line by line, what we are reusing and what we are replacing.

Related services

Frequently asked questions