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Call Support

No matter if you want to schedule an installation appointment, would like to change your appointment time, or have questions on your newly-installed ADT-monitored system, we’re here for you. Simply call us at (210) 794-6382. Our business hours are Mon-Thu, 9:00 AM - 7:00 PM and Saturday & Sunday 9:00 AM - 5:00 PM.

You can also browse through our security FAQs to get answers to our most popular questions.