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User’s Manuals

Radionics Manuals

Large Commercial
Radionics 7212 / 9112

Residential and Small Commercial
Radionics 4112 and 6112
Radionics 4000 / 4012 / 8000 / 8012
Radionics 2112 / 2112

Caddx / GE Manuals

Commercial and Residential

Caddx 8000 series 

Caddx NX Series

Caddx NX4

Caddx NX8

Caddx NX-1300

Detection Systems

Commercial and Residential
DS-7090 manual
DS7400xi

More Information You May Want to Know

Hiring in Del City

Hiring in Del City

We are looking for a licensed burglary, commercial fire, access control and surveillance technician.  Ideal candidates would have experience in Honeywell / Residio and DMP products. Technician would be responsible for leading installation crews and performing service...

Forrest City

Mark Birchler started Landmark Alarms after he retired as the police chief of Forrest City, AR.   He grew his company, which consisted primarily of residential and small commercial accounts, until he decided it was time to completely retire, so in 1997, he sold...

Little Rock

Guard Tronic opened our central Arkansas office in 1988, when Frank Gilbert, our founder’s youngest brother, moved to Little Rock after purchasing Williams Cable.  He opened our office on Patterson, just off of 65th Street, where we remained until a couple of years...

Muskogee

Guard Tronic opened our office in Muskogee in 1974.  We had been performing installations and service calls in the area using a Cesna 172 plane, flying out of the Fort Smith airport.  We finally had enough accounts in the area to open an office and move Rick Brown...

Springdale

Springdale

Guard Tronic moved to Northwest Arkansas in 1973, when Dave Gilbert, our founder’s younger brother, opened our office on Township in Fayetteville.   As the growth in that area moved North, so did our office.  We moved to Johnson Road in Springdale after a couple of...