Pengembangan dan Evaluasi Keandalan Data Sistem Monitoring Suhu dan Kelembaban Laboratorium Berbasis IoT dengan Metode Prototyping Pada Perusahaan Manufaktur

Abstract

Temperature and humidity control in manufacturing laboratories is crucial for testing accuracy, yet conventional manual logging remains prone to human error and poor traceability. This study develops an IoT-based laboratory environmental monitoring system using the Prototyping method, integrating XY-MD02 sensors via Modbus RTU serial communication (USB-to-RS485) on a local network. Functional testing via User Acceptance Testing (UAT) achieved a 100% acceptance rate across 36 role based scenarios. A 72-hour reliability test recorded a 100% Data Completeness Rate with zero missing data (4,320 records). Furthermore, sensor validation against a HIOKI reference calibrator demonstrated that temperature and humidity measurements met company tolerances (MAE < 1℃ for temperature and 2.66 % - 3.17% RH for humidity under 75% RH. The system proves optimal, reliable, and precise in supporting manufacturing laboratory digitalization.