ARDUINO M349 DS1307 Real Time Clock AT24C128 Storage DS18B20 Temperature Sensor module Temperature Sensor and Controller Electronic Hobby Kit

DS1307 real-time clock chip, supports IIC communications protocol AT24C128 EEPROM memory chip, supports IIC communications protocol DS18B20 digital temperature sensor chip, support the single-wire interface communication protocol 32.768KHZ crystal module provides precise clock signals CR1220 SMD Battery Block Support 5V DC voltage input The common pin has led pin as the standard 2.54mm