Alarm Relay vs. ADT Security: Honest Cost & Feature Comparison (2026)

Both Alarm Relay and ADT operate in-house, U.S.-based monitoring centers — neither outsources your emergency call to a third party. That’s an important distinction from some competitors.

Alarm Relay’s monitoring station is TMA Five Diamond certified, the highest certification in the central station industry, and UL certified. Our average response time is 30 seconds. As a family-owned business, our team treats every alert the way they’d treat one from their own home.

ADT operates six U.S.-based monitoring centers, which provides geographic redundancy — if one center is affected by a local outage, calls roll to another. ADT’s scale also allows for features like Alarm Messenger, a text-based verification system that has reduced false alarm dispatches by over 50%.

For most homeowners, the practical difference in response quality between the two is minimal. Both maintain UL certification, both employ trained agents 24/7, and both prioritize emergency dispatch. The difference is price, flexibility, and how personally you want your account managed.

Contracts and Flexibility

This is where the two companies differ most significantly.

Alarm Relay has no long-term or multi-year contracts at any plan level. Plans are billed annually, with year-to-year renewal — you’re never locked into a multi-year commitment. There are no early termination fees.

ADT’s professionally installed systems come with a 36-month contract. Cancel before the end of that term and you owe 75% of the remaining balance. On a mid-tier plan, walking away a year early could cost $400–$600. If you move, ADT’s equipment cannot be taken with you — the company will provide a basic starter pack at the new address, but your existing installed hardware stays behind.

ADT’s Self Setup (DIY) option is more flexible: after the first month of required monitoring, you can cancel professional monitoring and self-monitor for free. But you’ll lose access to the ADT+ app’s key features, including video storage and smart home control.

Equipment Compatibility

This is Alarm Relay’s clearest competitive advantage for homeowners who already have a system.

Alarm Relay works with virtually any alarm panel from a major manufacturer — DSC, Honeywell/Resideo, 2GIG, Qolsys, Bosch, Napco, Interlogix, and more. In most cases, we simply swap the communicator or reprogram the panel to point to our monitoring station. Your existing sensors, detectors, and keypads stay in place.

ADT prefers customers to use their own equipment or Google Nest-compatible devices. If you’re switching from a non-ADT system, ADT will typically want to install their own hardware rather than integrate with your existing panel. That means equipment costs even if your sensors are perfectly functional.

For homeowners who already have an alarm system and are simply unhappy with their current monitoring company, Alarm Relay is almost always the faster and cheaper path.

What ADT Does Better

To be fair, ADT has genuine strengths worth acknowledging:

• Brand recognition: ADT yard signs and stickers are widely understood as deterrents. Some studies suggest visible ADT signage alone reduces break-in attempts.
• Full-service installation: If you want a professional to design, install, and test your entire system — cameras, smart locks, smoke detectors, keypads — ADT’s turn-key service is well-suited for that.
• Google Nest integration: ADT’s partnership with Google Nest offers seamless smart home integration for customers already in the Google ecosystem.
• Monitoring redundancy: Six monitoring centers nationwide means built-in failover if one location is affected by an outage.
• Equipment financing: ADT offers 0% equipment financing over 36–60 months, spreading upfront hardware costs into manageable payments.