If you would like to cancel an alarm activation and police dispatch, please contact our Central Monitoring Station at (972) 644-9575 and provide your account #, or address and your cancel code or password. The local police and fire authorities may still respond to your property, even if we attempt to cancel an alarm.

24/7 Emergency Services Available

Speak With A Security Expert.

Please give us a call, or fill out this form and a Sentinel security expert will call you promptly.

Our expert sales and service staff is available during regular business hours from 8:00am to 5:00pm Monday through Friday to assist you. If you have an after-hours request, a technician will be dispatched to contact you, and respond to your location with a fully-stocked service vehicle if needed. Our goal is to keep your security systems and services operating 24/7.

Corporate Office

Local: (972) 644-6866

Toll-Free: (800) 275-6866

Monitoring Center

Local: (972) 644-9575

Toll-Free: (800) 713-6475

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