Welcome To Comlock Security Group


Since 1961

Locksmithing Cameras Access Control Alarms Security Center

Residential and Commercial Alarm Systems, Burglary and Fire Alarm Systems, Installations, Services and Monitoring in Monrovia

Home » Residential and Commercial Alarm Systems, Burglary and Fire Alarm Systems, Installations, Services and Monitoring in Monrovia

Check Our Service Area
Check to see if we provide alarm service in your area. Simply enter your ZIP code and press "GO"!

To REPORT A FALSE ALARM or update your account / password CALL 1 800 522-9992

Providing Alarm Systems In The Monrovia Area Since 1991

Your Security Is Our Business!


Spectrum Security Systems  714 633-0988

           Residential and Commercial Alarm Systems in Monrovia

  RRrSales   Installations   Upgrades   Additions   Service   Monitoring   Takeovers   Fire Testing   TrainingRR

*System Takeovers  from ZERO down plus $25.00 and up per month for our Monrovia customers.

**New Alarm Systems from $99.00 down plus $29.95 and up per month for our Monrovia customers.

          Request an Alarm System Survey / Information For Your Monrovia Home or Business.

Spectrum Security Systems, Inc. is Comlock Security Group's alarm division. We have been selling, installing, and providing service to both commercial and residential alarm systems Monrovia area in the since 1991. Alarm systems are among the first lines of defense for both Monrovia commercial and Monrovia residential building owners. In fact, some insurance companies mandate the installation of an alarm system, mainly for fire insurance, prior to obtaining a policy. 

Today's alarm systems have much more capability over systems installed in the past five years. The reliability of alarm systems has increased tremendously over older systems making them easier to use.  Newer technology and devices has reduce the number of false alarms reported each year.  Another advantage is the ablilty to remotely manage your house.  With this, you can typically arm and disarm your security system from anywhere in the world via a web-enabled device, monitor who arrives and leaves your home, as well as use a panic button to elicit an instant response from your alarm monitoring company.

Quick Facts:
A burglary occures every 15 seconds in the United States alone, amounting to over $4 Billion in property loss annually.
The average burglary amounts to $2,000 in property loss.
58% of burglaries take place during the day.
Only 25% of thieves work alone.
12% have admitted to using a stolen vehicle during the burglary.
Burglars are 2.7 times more likely to target homes without security systems.

Alarm Owners Permit in Monrovia may be required.

The city of Monrovia may require you to obtain an alarm permit.  It's not a permit to install the alarm system but for you to own and operate it. You can check your city's website or give them a call for information regarding an alarm permit. It is the owner's responsibility for obtaining the alarm permit if required by your city or county.

We sell, install, and service both burglary and fire alarm systems in the Monrovia area.

Our central monitoring station is located in Aliso Viejo and not in another country but right here in Orange County, California.  Backup monitoring station is located in Texas.

YOU OWN THE EQUIPMENT -  Some companies offer no money down systems but they maintain ownership of the equipment; of course they won't voluntarily tell you that.  If you want to terminate your relationship with a company that maintains ownership of the equipment, they will remove everything they installed in your building and you're back to square one.  An alarm system purchased from Spectrum Security is your property, you own it!  

Our technicians install the systems we sell; we do not use sub-contractors. That means you have only one place to call for service; no run-a-round or finger pointing to another company. It starts and ends with us.



Need an Alarm System Manual?  Check Here!

Give us a call at 714 633-0988 to speak with our team regarding an alarm system for your home or business in the Monrovia area.

Our estimates are FREE and convenient appointments are available Monday through Friday.

* Requires a 24 month alarm monitoring contract.

** Requires a 24 month alarm monitoring contract.  Our monthly monitoring fee includes full system maintenance.   Should you ever encounter a problem needing repairs the costs are covered during regular business hours  All parts and labor.  Batteries excluded.


Our Contractor Licenses #478006 information
Our Orange County Security Company also provides services to
Los Angeles, Riverside, Ontario, Inland Empire and San Bernardino Areas

Call 714 633-1499