$16.95/mo Home Security Systems in San Antonio.

Do not be mistaken on what you just read! We truly haven’t changed our San Antonio home alarm monitoring rate since 1978. That means we’ve had the same rate for over 42 years! What other San Antonio security system and alarm company can say the same thing? Not only have we offered the same, affordable rate for over 42 years, we also provide excellent service. This keeps our customers very loyal to us. We value our customer’s business and want to remain their go-to home monitoring company for all of their alarm needs so we make sure to earn their business for the long-term.

San Antonio security systems with absolutely no contract -If you don’t like us? FIRE US!

We don’t need to have hidden agendas and contracts with our customers because we are confident in our great service and level of expertise. In fact, since 1978, we’ve never required a contract on any security systems in San Antonio. We know that if you like our service, you’ll stay with us. If you don’t, you won’t. We don’t need to bind you to our alarm company. Instead, we let YOU decide!

3 Flexible Security Plans

Zero Contracts!
Plan 1 $16.95 per month

Wireless Monitoring

  • $89 one-time cost
  • Use your existing system
  • 24/7 private monitoring
  • LTE/5G ready cellular + Wi-Fi Connection
  • Professional Installation
  • Same Rate Since ‘78
Compatible systems we can takeover
DSC 1616
HONEYWELL 15p / 20p
Need a new basic system installed? Give us a call, or try our build & price. Build & price
Does your system look different? Text us a photo and we’ll check compatibility 972-597-1911
Plan 2 $21.95 per month

Wireless Monitoring + Arm/Disarm App

  • Upgraded Cellular + Wi-Fi Transmitter
  • Arm/Disarm App Control w/ Notifications
  • $89 one-time cost
  • Use your existing system
  • 24/7 private monitoring
  • LTE/5G ready cellular + Wi-Fi Connection
  • Professional Installation
  • Same Rate Since ‘78
Control your existing SYSTEM from your phone!
Compatible systems we can takeover
DSC 1616
HONEYWELL 15p / 20p
Need a new basic system installed? Give us a call, or try our build & price. Build & price
Does your system look different? Text us a photo and we’ll check compatibility 972-597-1911
Plan 3 UNAVAILABLE per month

Smart Home Security & Automation

  • 7” Touchscreen Keypad Hub
  • Built-in Camera & Glassbreak
  • 1 Encrypted Power G Motion or Glass Break Sensor
  • 3 Encrypted Power G Door Sensors or Sensor Takeover Module
  • Expandable w/cameras, thermostats, lights, locks all from 1 app.
  • Professional Installation
  • 24/7 private monitoring
  • LTE/5G ready cellular + Wifi Connection
$499 $499

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Plan 1Plan 2Plan 3
$16.95ER MONTH
Min. Start-up Cost
This is the most common equipment startup cost. No high pressure sales people here.
No Contract
If you don’t like us, fire us! We are confident we can keep you with great service though.
Wireless. No Phone Line Needed
Even if your phone line is cut, and power goes out, you are still covered 24/7 by cellular connection.
24hr Monitoring
Continuous coverage by our privately-owned UL Certified central station.
Insurance Discount
Because our central station is UL Certified, you will qualify for the maximum insurance discount.
Arm/Disarm App Control
Arm your system right from your smartphone using our app. Includes Stay and Away arming feature.
System History in App
View exactly when your system was armed, disarmed, or when it was triggered.
Push, Text & Email Notifications
Get notified when a specific door or zone is opened and closed, or when it’s armed, disarmed, triggered.
Dual Path- with Wi-Fi Connection
Wi-Fi connected systems are much faster. Also provides an extra layer of protection if cell signal drops in your area.
Works with Indoor / Outdoor Cameras
Our cameras work in unison with the alarm system. If the alarm is triggered, cameras automatically record.
Works with Video Doorbell
View live feed and answer door from your touchscreen keypad, or phone. Keep tabs on deliveries.
Works with Z Wave Devices
The built-in Z Wave hub connects lights, locks, thermostats, garage, into 1 app for a fully connected experience.
Control Home from 1 App
A true smart home is controlled from a single app. Where all devices talk to each other, and work together.
128 Bit Encryption
Our smart sensors use bank-grade encryption. Frequency Hopping Spread Spectrum, and 128 Bit AES Encryption.
Smash & Crash Protection
Our smart panel will still send emergency signals even if completely destroyed by an intruder.
Works with Alexa & Google Home
You can add alarm.com as a skill to make it even easier to control your smart home, hands free.
Power Outage & Restoral Notifications
Receive alerts if your home loses power, and when it’s turned back on.
Arming Reminders
Forget to arm the system, close the garage, or lock door? No problem, our system can remind you.
Unexpected Activity Alerts
Our system learns your patterns. For example: if someone opens a door at an odd time of the day, it’ll let you know.
Automated Schedules
Setup a schedule for your lights and thermostats so you don’t have to remember.
Automatic WiFi Updates
Our smart panel stays current. New features and functionality get pushed directly to your devices.
Power G Compatible
Power G sensors are the best, and that’s what we use. 1-mile range, bank level 128-bit AES encryption.

Ready to automate? Let our smart home security systems take your San Antonio home to the next level of sophistication.

Shopping for a smart home security system in San Antonio with a little more advanced features? Look no further. Our 7” touchscreen IQ2 panel is attractive with its ultra-thin and sleek design that resembles a phone and has a built-in photo frame to display all your favorite photos. Plus it easily works with cameras and is smart home ready. The IQ2 panel comes with a built-in app control so that you can easily access all your favorite features from just the palm of your hand. It also is connected by LTE cellular wireless or wifi, ensuring your system gets responded to quickly and efficiently while also having the capability of interacting significantly faster with your smartphone app. In addition to all these amazing features, the IQ2 panel uses Power G sensors and encrypted sensors. This means that the sensors have military grade 2-way encryption, ensuring your privacy is highly protected. Most companies cut corners with this type of encryption, opening up your system and home to a possible invasion or privacy breach. We value your privacy and safety too much to cut that corner. Our Power G sensors also have automatic signal adjustment that helps to improve battery life and ensure reliable connection, as well as, inference circumvention that ensures your signals never get blocked by other wireless protocols. Along with all of these features, you’ll also have access to Bluetooth touchless disarming and a built-in glass break detector. IQ2 works with most existing alarm sensors while also being compatible for devices like indoor/outdoor cameras, z wave locks, lights, thermostats, and garage door openers.

Plan 1 and 2 upgrade options

Standard Smartphone Control w/Dual Path Wifi

Arm & Disarm your system from anywhere in the world, including Stay & Away…

$5.00/month Learn More

Smoke & Heat Detector

Triggers your alarm system when heat or smoke is detected. In order to add…

Extra Door/Window Sensors

Contact us to learn more about the Extra Door/Window Sensors. Wireless sensor that can…

Motion Detector

Triggers your alarm system when it senses motion. Must be mounted 6-7 feet from…

Plan 3 upgrade options

HD Video Doorbell

Overview The ADC-VDB770, Alarm.com’s next-generation video doorbell camera and the latest installment in the Design…

$199 Learn More

HD Outdoor Camera

WiFi Connected. 1080P & Waterproof Secure Encrypted Cloud Storage Excellent Low Light Perform…

$199 Learn More

HD Indoor Camera

Wifi Connected Pristine video up to 1080P2-Way AudioSecure Encrypted Cloud StorageStream live video or motion…

$199 Learn More

Standard Smartphone Control w/Dual Path Wifi

Arm & Disarm your system from anywhere in the world, including Stay & Away…

$5.00/month Learn More

“Free alarm systems” are nothing but gimmicks.

“Free” alarm systems have hidden agendas. What you don’t realize when purchasing a “free” alarm system is that the cost of the system is rolled into your monthly contract. While the system will be paid off within the first year, you will still be paying those outrageously large monthly bills! What’s more? You are now stuck in a 3-5 year contract that forces you to overpay for far too long!

We’re an honest and transparent San Antonio alarm company.

At Smith Thompson Security, we pride ourselves on our transparency with San Antonio home security customers. We will never hide equipment fees by creating large monthly rates for our customers. Instead, we believe that showing you the price of the equipment and monitoring rate separately is the honest thing to do. This ensures that you know exactly what you are paying for.

No Contracts. No Price Increases.

Get a Quote today!

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Security system consultation and direct pricing over the phone.

Don’t you hate it when you call a company to receive more information and they hold you hostage over the phone with their lengthy and high-pressure sales tactics? At Smith Thompson Security – San Antonio, we don’t want to waste your precious time or make you feel pressured to go with us. Instead, we give you upfront pricing right over the phone. We are fully transparent and don’t try to sell you on a bunch of stuff you don’t need like those high-pressure sales guys from other companies.

Do it yourself pricing, industry leading professional installation!

No need to install your system to try to save money. For just $29.95/month, we offer smart home security and automation while also sending you a professional technician to install it, test it, and demo it for you in San Antonio. We will even add video and cameras to your package. Most companies that offer this are charging between $50-$70 per month for the same service. Instead, at Smith Thompson Security we value your time and want to do it for you!

What our customers say
Excellent Reviews

Don’t take our word for it, look us up. We have excellent ratings on the Better Business Bureau, Trustpilot, Nextdoor, Angie’s List, Google, Yelp, and Facebook. Since 1978, we’ve worked hard to establish and maintain a solid reputation, and our online reviews back it up.

Top notch home alarm monitoring at our Texas call center.

Many people don’t know what they are signing up for when they get a home monitoring system. They think they will get customer service from the company they purchase from but, unfortunately, they are not. In fact, after most alarm companies install the system, they sell your account to a 3rd party monitoring center. This means that your account is now handled in a center that deals with millions of other customers from thousands of different companies. Not the level of customer service and expertise you were expecting, huh? Smith Thompson doesn’t play that game. Instead, we keep all of our monitoring in state. We own and operate our own private, 24/7, UL Listed and Approved, dispatch facility right here in Texas. Let us install it, service it, and monitor it for you.

Smith Thompson Home Security and Alarm San Antonio
18911 Hardy Oak Blvd Suite 165
San Antonio, TX 78258
(210) 501-3977

Looking for a simpler home security system solution in San Antonio?

Already have a system that’s working just fine? For no contract, Smith Thompson Security can take over most alarm systems by simply adding our own cellular wireless transmitter for a one-time low cost. Plus, we can still service you for only $16.95/month. We understand that if it’s not broken, there’s no need to fix it! We don’t require you to completely replace your already working alarm system.

We also offer security systems for your business.

At Smith Thompson Security we offer security solutions to thousands of small businesses across Texas such as cameras, smart locks, smart thermostats, temperature sensors, and arming and disarming notifications. We do all this at our reasonable rates and no contract obligations. Also, you can easily access these security measures right from your smartphone!