4. Built-in large-capacity EEPROM can be used to store long-term temperature data and record light alarm information. It can also be used to record pressure or humidity data measured by external sensors;

5. The stored data can be read via Android phones and iPhone phones.

1. High-precision temperature sensor can complete real-time or scheduled environmental temperature measurement;
2. High-precision RTC, which can perform more accurate timing wake-up operations;
3. Light detection function can detect strong visible light, send and record alarm signals;
4. Through external sensors, complete the measurement and recording of pressure, humidity and other information;