About Us

We Are

Fastest growing Fire & Security company in the Tri-State area.

Currently located 10 miles outside of Manhattan, in Belleville, NJ. We consider our clients and employees to be a part of our extended family. We specialize in commercial, residential and industrial applications and are growing exponentially. We are not only able to service the New Jersey area, but also New York & Pennsylvania as welll.

Diverse Solutions

At Underdog Fire & Security , we provide the peace of mind that comes from knowing that your home or business is secure. We offer a wide range of state-of-the-art systems and solutions to keep your staff members and clients safe. Our commercial security solutions also work to protect your investments. In addition to commercial security systems, we also provide fire alarm systems and video surveillance systems. Our team works hard to meet all of our clients’ residential and commercial security needs.

Underdog Fire & Security, as the name says, Fear the Dog! Our mission is to make each and every one of our clients feel confident and secure in their homes or businesses. With only top-quality cameras at our disposal, rest assured that we’ve got you covered. At Underdog Fire & Security we are committed to building a safer world.

Underdog Fire & Security is a full-service security company. We offer comprehensive security services in both commercial and residential contexts. Our experts think outside-the-box to create solutions that are tailored to you.

Professional Team

Meet Our Experts

Harry San Martin


Harry has been involved in the construction & Fire Protection industry for over 20 years. His success has led him to expand into the alarm and security industry.

Jason Tielve

Vice President

Alberio Loaza

Lead Electrical Technician