Welcome to Denalect

I founded Denalect Alarm in 1969. We are a local, independent company providing helpful service for the security needs of businesses and residents of Northern California.

I guarantee you that Denalect will quickly and courteously respond to your safety and security needs. We are one of the few companies that provide live friendly operator service 24 hours a day.

Our headquarters in Walnut Creek house our company operations including system design, customer service, installation, monitoring and business operations.

The Personal Difference at Denalect Alarm

Founded in 1969, Denalect serves the safety and security needs of  business and residences in Northern California.

We are proud to respond to and support our friends and neighbors in Alameda, Contra Costa, Marin, Solano and Sonoma counties.

24 X 7 Service & Monitoring

For more than 40 years, Denalect has helped Bay Area residents maintain an electronic vigil over their properties and homes.

From our Central Station, (an Underwriters Laboratory compliant facility), we monitor businesses, schools, homes, ranches and even government offices themselves.

Attentive Courteous Customer Service

You come first at Denalect.

Your calls are promptly taken; your questions thoughtfully answered

…with enthusiasm and every effort to understand and solve any situation you might encounter.

Friendly Installers

Denalect selects, trains and employs the nicest installers in the business.

Backup Power and Radio Reliability

If an alarm is tripped, you can rest assured that even after earthquakes or power outages, Denalect is there with our 24 X 7 backup power generators.

In fact, event during the Loma Prieta earthquake, every Denalect customer was fully armed.

With our Ultra Security package you can have radio reliability — above and beyond landlines or mobiles.

From San Rafael to Concord, Walnut Creek, Danville, Lafayette, Livermore and Pleasanton, we’re there for your security.

Experienced staff

We like to think our team gets and gives good energy from you, our customers.

And for this reason, we have some of the most loyal installation team, who respect your home and run a clean shop.

Professional grade, reliable equipment

Denalect regularly reviews alarm technologies from established vendors and with innovative new suppliers.

With 40+ years in the industry, Denalect  benefits from participation in Bay Area, California and National alarm associations — with a focus on the highest standards.

So, when our installers arrive you can be confident that your home or business will get the most reliable and best quality equipment.

Professionally trained…

Ready to serve you…whether in Concord, Vallejo, Danville, Fairfield or San Rafael.

Denalect installers call ahead, confirm appointments, discuss your specific environment, install all sensors securely and discreetly, check your system, clean up and check back with you for regular service and maintenance.

Denalect is full-service and customer friendly.