We are one of the oldest, private and family owned alarm companies in North Dallas.  We do all of our own service and installation with our highly trained and state licensed technicians.  We do our monitoring locally at our UL and FM approved central station. State Burglar License: B02877 State Fire License: ACR-1750564 If you would like the peace of mind a Tel-Guard Alarm System will give you, please call us at: Office: 214-352-1111 Fax: 214-352-1087 Address: 2830 Congressman Lane Dallas, TX 75220 .