Worked on the librenms/librenms repository to address a calculation issue affecting Datacom optical signal level monitoring. Focused on device monitoring and network device configuration, the developer corrected the divisor used in signal level calculations from 100 to 1, directly improving the accuracy of SNMP-based data collection. The solution included implementing both unit and integration tests in PHP and INI to validate the fix and prevent future regressions. This targeted bug fix enhanced the reliability of Datacom device metrics, reduced the likelihood of false alerts, and contributed to more maintainable and evidence-based monitoring within the existing codebase.