Introduction - If you have any usage issues, please Google them yourself
Procedures for the temperature alarm system, functions as follows: 1. Displays the current time and temperature, time display real-time clock, the clock continues to operate after power 2 external keyboard can set the temperature of the upper limit and lower limit, the temperature exceeds the upper alarm limit and lower limit, respectively, and a sound and light indication 3 alarm record the current temperature and time, and saved to EEPROM, once every 5 minutes up to an alarm, the alarm recording requires the ability to query