Existing Customer Portal

We Are Here To Help

Already protected by USA Alarm Systems? Access support, service requests, billing, and monitoring assistance below. No sales pitch — just fast, local help.

Active Alarm or Emergency?

Do not use this form. Call our 24/7 UL Central Station immediately for dispatch.

Request Service

Schedule a technician visit for repairs, battery replacement, or panel issues.

Customer Support

Get help with your system, app, or account questions from our Monrovia team.

Monitoring Support

Alarm not communicating? False alarm? Our central station is standing by 24/7.

Billing Assistance

Have a question about your invoice or billing? Contact our team and we'll help you get it sorted out.

Quick Support Resources

System Test

Call us to place your system on test and verify all signals are communicating properly.

Permits & Certificates

Need a copy of your fire alarm inspection certificate or alarm permit? Request it here.

Alarm Not Working?

Call our tech line. Most issues resolved same-day by our local Monrovia technicians.

New to USA Alarm Systems? Request a consultation instead →