Water is very important for the life of living things on earth. The function of water for life cannot be replaced, but water taken directly from springs often experiences turbidity which usually occurs during the rainy season where excessive rainwater intensity can affect the clarity of the water flowing into people's homes. From this problem, it is necessary to design a monitoring sistem for the turbidity of water flowing into the main tank which can be monitored via laptops, computers or cellphones that have internet access that can monitor in real-time and in the form of graphs and data stored in My Structured Query language (mysql) in this design. Using the nodemcu esp8266 which controls the tool in the design, the turbidity sensor is used to detect water turbidity, the ultrasonic sensor is used to detect the water level in the main tank, the relay is used to control the electric current, the solenoid valve is used to close the valve according to the conditions given with the design results of 120 ntu down and water height > 15 cm then the on relay and solenoid valve open the valve so that water can flow into the reservoir, while 121 ntu up and water height < 5 cm then the off relay and solenoid valve close the valve, the test is done using blackbox testing and the results of this test that the function on the sistem is 100% appropriate.

Sistem akreditasi merupakan salah satu bentuk penilaian (evaluasi) mutu dan kelayakan institusi perguruan tinggi atau program studi yang dilakukan oleh organisasi atau badan mandiri di luar perguruan tinggi. Penilaian tersebut digunakan sebagai tolak ukur mutu bagi semua program studi dan intitusi pendidikan tinggi baik dari perguruan tinggi negeri maupun swasta yang menyelenggarakan program professional maupun akademik. Semakin baik nilai akreditasi akan berdampak pada pandangan pihak luar mengenai kualitas program studi dan institusi pendidikan tinggi tersebut. Namun pengumpulan data dan informasi serta pengisian borang pada program studi  informatika masih memiliki banyak kendala seperti banyaknya data-data yang dijadikan sebagai kriteria penilaian membutuhkan banyak waktu dan usaha. Dan juga secara terus menerus akreditasi yang terus berulang setiap beberapa tahun merupakan salah satu masalah yang dihadapi dalam penyimpanan data-data akreditasi tersebut. Oleh karena itu, diperlukan sebuah sistem informasi yang mampu mengintegrasikan keseluruhan isi data pendukung sehingga saat proses evaluasi didapatkan informasi mengenai bagian-bagian apa saja yang kurang dan sudah memenuhi standar. Dari penelitian yang telah dilakukan diperoleh hasil bahwa sistem dapat berjalan sesuai dengan yang diharapkan sehingga peneliti mengharapkan penggunaan sistem akreditasi ini dapat memberikan gambaran tentang nilai akreditasi program studi, dan pengelola program studi dapat melakukan tindakan untuk mempersiapkan dan meningkatkan status akreditasi sehingga dapat memperoleh nilai tertinggi.

The development of the internet of things (IoT) is one of the influencing factors in the industrial era 4.0 towards the next industrial era, where with this technology humans can communicate with electronic devices connected to microcontrollers remotely using an internet connection. The door is a place to enter or exit to start daily activities. Therefore, door security is the main thing in designing a good room security. This research uses research and development methods, namely methods that aim to produce or develop certain products. There are several stages in the research, namely (1) literature review (2) analysis of tool and material requirements (3) Arduino Integrated Development Environment (IDE) schema design (4) system design with Arduino Nano and (5) system testing and analysis. It can be concluded from the test results that the door safety device can work according to the design made, considering the results of the Arduino Uno which can be connected to Radio Frequency Identification (RFID) and read e-KTP ID and passive infra-red or PIR sensors to detect movement and send notification to Telegram.