The government's obligation, via the Bureau of Fire Protection, for the installation of Fire Detection and Alarm Systems (FDAS) in high-occupancy buildings or structures has increased the demand for experienced professionals to do this duty. To solve this issue, the Technical Skills Development Authority (TESDA) included the FDAS installation, setup, and troubleshooting competency to the Electrical Installation and Maintenance (EIM) NCII qualification. Between July and December 2017, a reduction in passers was seen as a result of the FDAS being included in the said qualification. As a result, the researcher developed a portable device that can be used to teach students the required knowledge, skills, and attitude for wiring, installing, and troubleshooting FDAS and to encourage training institutions to incorporate this training device into their training programs and institutions. The purpose of this study was to determine the acceptability of the training device in terms of design, performance, and safety. The examination included seven senior high school faculty members who were teaching electrical installation subjects in Leyte Province's northeastern region. The evaluation of the portable gadget yielded a mean of 4.937, confirming that the FDAS Trainer is quite acceptable to the evaluators. With an extremely favorable rating in all three criteria, it can be concluded that this portable trainer device is an effective training device for developing students' and trainees' knowledge, skills, and attitudes in electrical installation classes, auxiliary systems installation classes, and other allied electrical installation programs.