Nowadays, security issues are critical, especially regarding access control to sensitive areas such as laboratories. Conventional lock systems are considered ineffective due to the lack of digital traceability and vulnerability to misuse. Therefore, this research designs an Internet of Things (IoT)-based door security system for an electrical engineering laboratory using NodeMCU ESP8266 and RFID technology, which utilizes electronic Identity Cards (e-KTP) as access media. The system employs an MFRC522 RFID module to read the UID from the chip embedded in the e-KTP, integrated with a NodeMCU v3 microcontroller connected to a Wi-Fi network. User access data is recorded in real-time to a local database (XAMPP) and Google Spreadsheet for digital tracking. The research methodology applied is Research and Development (R&D) using the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The design results show that the system can automatically unlock the door upon successful e-KTP verification, log user identity and timestamp, and enhance laboratory access security and transparency. Thus, this system is effective in preventing theft and facilitating traceability in case of asset loss.