Monitoring System of The Temperature for Mini Fish Storage using Internet of Things

Fish is one of the high-protein foods that are very helpful for development human brain. Then, it necessary to maintain freshness fish consumption. At this time, fishers and fishmongers preserve by using Ice in storage. However, considered ineffective due improper ice change time. Therefore, monitoring temperature important find right time when replacing used ensure quality fish. The device uses Arduino ESP32, DHT21 Sensor, Micro SD Module, Internet Things system, Blynk Application notifications Telegram App. sensor test results obtained a data conformity level (Error Level) 2%. storage room temperature, there lowest 10.50 o C conditions 0 C. best state keep fresh researchers want 2 at temperatures or 11.50 testing takes replace about 10 hours.