Which of the following could lead to a security breach in a DIY-installed alarm system?

A lack of professional assessment in a DIY-installed alarm system can significantly increase the risk of a security breach. When individuals opt for do-it-yourself installation, they might overlook critical aspects such as proper placement of sensors, inadequate programming of the alarm system, or failure to integrate all components correctly. Professional assessments involve expertise in identifying vulnerabilities in both the equipment and premises, ensuring that the system is set up to maximize security.

Without this professional insight, users may not fully understand their system's capabilities or limitations, leading to potential gaps in security. For instance, a poorly placed sensor may fail to detect intrusions in a vital area, or an incorrectly configured alarm could result in false alarms that discourage users from responding to legitimate threats. Therefore, the absence of a professional assessment can leave DIY systems exposed to breaches, emphasizing the importance of expert involvement in securing premises effectively.