This research aims to examine the effect of the Debt to Equity Ratio (DER) on the stock value of PT. Ramayana Lestari Sentosa Tbk during the 2019-2023 period. Using quantitative analysis with dependent data obtained from the Indonesia Stock Exchange, the analysis shows that the company's DER was within a moderate range (35%-42%) throughout the study period. The results indicate a negative correlation between DER and stock prices; however, the effect is not significant when viewed partially. The decline in DER in 2023 reflects the company's efforts to strengthen its capital structure and reduce dependence on debt. These findings are expected to enhance investors' knowledge and support the company's operations in developing future financial and investment strategies.
 
 

This research aims to design and build a tool for detecting and repelling pests on kale plants using Passive Infrared (PIR) sensors and Internet of Things (IoT) based pesticide liquid which can be controlled via the Telegram application. This system works by detecting the movement of pests using a PIR sensor, which then activates the mechanism for automatically spraying pesticide liquid to repel pests. Users can monitor and control this tool in real-time via Telegram, providing flexibility in plant monitoring. Data from sensors is sent to the IoT platform and integrated with Telegram to provide remote notifications and control. Test results show that this tool can detect the presence of pests with high accuracy and is effective in repelling pests from the kale plant area. It is hoped that the implementation of this tool can help farmers maintain the quality and quantity of their kale harvest in a more efficient and environmentally friendly manner.