This packet of 70 learning modules on alarm basics is 1 of 8 such packets developed for apprenticeship training for low voltage alarm. Introductory materials are a complete listing of all available modules and a supplementary reference list. Each module contains some or all of these components: goal, performance indicators, study guide (a check list of steps the student should complete), a vocabulary list, an introduction information sheets, assignment sheets, job sheet, self-assessment, self-assessment answers, post-assessment, instructor post-assessment answers, and a list of supplementary references. Supplementary reference material may be provided. The 70 training modules cover theory of diodes, bi-polar devices, and integrated circuits; binary numbering systems; logic gates; dialers; blueprint reading; building materials and symbols; design of alarm systems; types and applications of alarm systems; hand and power tools; types and applications of detectors; trade terms; types and applications of sensors; annunciators; detection devices; contacts; key stations; red tape procedures; builder board requirements; licensing; central stations; fire and police department monitoring; fire, police, emergency responses; card key and vehicular access control; business letters; video surveillance systems; and closed circuit television. (YLB)