Feel Invincible

Residential Services

Rapid Response monitoring provides UL listed 24/7 emergency dispatch and notification.

Invincible Security – Locally owned and operated by Mark Donakowski.

Commercial Services

Choosing from the top name manufacturers of intrusion detection devices & systems allows Invincible Security to customize solutions specific to a customer’s unique needs. From proven hard wire and wireless products to state of the art “smart” phone interfaces, systems are designed and expertly installed to provide the most convenient, controllable and effective security systems available today.

Contact Us

Invincible Security Inc
9896 Rosemont Dr Suite 102
Lone Tree, CO 80124

(720) 291-2841


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  • Welcome
  • About Us

Welcome to Invincible Security Inc.

Security Commitment


Invincible Security, is committed to excellence and affordability when it comes to securing your home. With an experienced and professional local company complete with Rapid Response monitoring we are the best choice to provide your home or business security needs.

img_1The owner of Invincible Security, Mark Donakowski, has over 30 years in the security industry. In December of 2013 Mark made the most important decision in his security career; making his company independent from the behemoths that dominate the market place. To put this in perspective Mark was affiliated with ADT for most of the 30 years,  rising to a high level of management before becoming an ADT dealer in 1997.  After careful deliberation and research  Mark made the decision to terminate his relationship with ADT.  Since 2013 Invincible Security became an independent security provider with monitoring service provided by Rapid Response Monitoring of Syracuse, New York.  As an independent Mark is able to provide his customer’s with personal attention and custom solutions that seem less of a priority with the big name national companies. With personal commitment and attention of a local company and the advanced and professional Rapid Response Monitoring our customers get the benefits associated of local service and the vigilance of a 24-7 large company. With direct involvement in the business Mark makes sure that every aspect of a customer’s experience is courteous, prompt and professional. We bring personal attention and detail to each customers unique needs. We have security solutions for any situation, so our customers feel Invincible to any of today’s risks.

Getting a security system was one of the best things we ever did for our family. Although we live in a high end, gated community, security to us is a necessity not a luxury because it gives us complete peace of mind. I love the “emergency” button on the control panel, especially when my husband is out of town. (more…)

One of the best things we ever did for our family!

Pam in Lone Tree