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Home and Commercial Security Systems in Northfield

Security Experts Who Put Northfield Residents First

As a pioneer provider in the security system industry in the Northfield area, we have been on the cutting edge of fine-tuning existing home and commercial security systems to make our communities safer places to live and work. Our dedication and commitment to the communities in Northfield have never wavered. With our incredibly talented team of security technicians, we are continually raising the bar on our services, efficiency and effectiveness.

Unlike other Northfield security companies, we offer:

  • Best brands & hardware: the most trusted industry technology
  • Local Chicago business: security by Chicagoans, for Chicagoans
  • Experienced installers: average tech has 10+ years experience

Schedule your security service today!

Northfield, Illinois Northfield, Illinois is located in Cook County 19 miles north of the Chicago Loop. Like a number of Chicago’s northern suburbs, Northfield is known for its prosperity. Northfield’s median household income is in excess of $91,000 per year, while the annual family median income is more than $114,000. The median home value is close to $600,000. Northfield’s population is a little more than 5,389 residents, with over 2,155 households and nearly 2,000 family households.

Given Northfield’s affluence, it’s not surprising to learn that Northfield homeowners are really interested in protecting their investments in their homes and safeguarding their families from harm. Although the community has a low level of all kinds of crime, including property crime, much has to do with the Northfield residents already taking measures to protect their homes and families with home alarm systems no time! It’s not uncommon for wealthy communities like Northfield to actively seek out home alarm monitoring services. And, since our best advertising comes by word of mouth, Alert Protective Services finds that our customers are our best sources of referrals.

Services We Offer in Northfield


Keeping your family safe in your Northfield home is our number 1 duty. We have the experience and technology required to create a system that fits your house and family needs. Whether you need monitoring or security cameras, we can do it all. Our services include:


We are recognized as one of the most trusted, independent security providers for businesses in the Northfield area. Looking for a fire alarm installation or an access control system? We can help. Our services include:


Looking for a specific security brand for your Northfield home or business? We offer:

  • Ademco
  • ADT
  • Silent Knight
  • Honeywell
  • Napco
  • Safewatch
  • G.E.
  • Firelite
  • DSC
  • FBII
  • And much more. . .


“Installer Alex was very good. Did more than either of us expected initially, for the same fee as originally quoted.”  Richard Felt

See what other home owners and business owners are saying about us! With 4.6 out of 5 stars on Google!

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Alert Protective Services LLC

3833 N Cicero Ave Chicago, IL 60641-3623

License #127-001677

(773) 685-8383 - Sales and Service (847) 879-6134 - Central Station

(773) 545-8940 - Fax

We can monitor

almost any existing make or model for less than

Quality Alarm Systems

Ancillary Products and Services for Your Home and Business Since 1982