Call Support

No matter if you’d like to schedule an install, are trying to change your appointment time, or have questions on your new ADT-monitored security system, we’re happy to help. Just call us at (562) 203-6338. Our office hours are Monday through Friday, 9:00 AM - 7:00 PM and weekends 9:00 AM - 5:00 PM.

You can also check out our security FAQs to find answers to our most asked questions.