Intrusion alarms that actually get noticed. A1 installs door, motion and glass-break detection with smart alerts and optional 24/7 monitoring — for homes and businesses across Dallas.
A security camera tells you what happened. An alarm system tells you the moment it is happening — and gets a response moving. A1 Security Gate & Intercom installs burglar and intrusion alarm systems for Dallas homes and businesses, with the sensors, sirens and smart alerts that turn a break-in attempt into an instant notification instead of a next-morning surprise.
We design each system around your property’s real entry points: door and window contacts, motion detectors, glass-break sensors and panic buttons, tied to a modern control panel with cellular backup so cutting the phone or internet line does not disable it. You get push alerts on your phone the instant a zone trips, and you can arm or disarm from anywhere.
For businesses and homeowners who want a guaranteed response, we offer optional professional 24/7 monitoring, where a triggered alarm reaches a monitoring center that can dispatch the authorities. And because we also install cameras and access control, your alarm can flag the right camera and tie into your door system — one integrated layer of protection, installed by one local team.

Any property worth protecting benefits from intrusion detection — especially when paired with cameras and access control for a complete picture.
After-hours intrusion detection on doors, windows and interior zones with monitored response.
Large-area motion and perimeter detection for high-value inventory and equipment.
Door, window and motion protection with smart alerts and remote arming from your phone.
Panic buttons, glass-break and entry sensors to protect staff, cash and stock.
We build the system from the sensors your property actually needs and tie it into your phone, cameras and access control.
Sensors on entry points that instantly detect an opening when the system is armed.
Interior motion detectors and audio glass-break sensors covering rooms and large areas.
Push notifications and arm/disarm from anywhere, with cellular backup so it stays online.
Optional professional monitoring and panic buttons for guaranteed emergency response.
From first call to final walkthrough, we keep it simple and professional.
We assess entry points and risk areas, then map the sensors and panic devices you need.
You get a written quote and clear monitored-versus-self-monitored options to choose from.
We mount sensors and the panel, set up cellular backup and connect the app and any cameras.
We test every zone, set up your codes and users, and show you how to arm, disarm and respond.
Every alarm project is different. These are common alarm setups we may recommend depending on your property, entry points, wiring, and how you want to be alerted.
Contact and motion sensors that detect unauthorized entry.
Custom quote after site inspection
Request a QuoteAn alarm system connected to monitoring for rapid response.
Custom quote after site inspection
Request a QuoteA system you arm, disarm, and monitor from your smartphone.
Custom quote after site inspection
Request a QuoteFinal pricing depends on property layout, wiring, equipment model, number of access points, and installation requirements.
Popular product options that may be used depending on your property, wiring, access points, and installation requirements.
Wireless contact sensors that detect when protected doors or windows are opened.
Equipment from $129
Request Installed QuoteA passive-infrared sensor that detects movement in protected interior spaces.
Equipment from $59
Request Installed QuoteA control panel with app control and cellular backup for reliable monitored alerts.
Equipment from $299
Request Installed QuoteEquipment pricing does not include labor, wiring, configuration, permits, or site-specific installation requirements. Final installed pricing requires a site review.
A1 installs and services intrusion alarm systems for homes and businesses throughout Dallas and the North Texas metroplex.
Common questions about alarm system installation in Dallas, TX.
Get a free assessment and a clear quote for alarm system installation and monitoring options anywhere in Dallas–Fort Worth.