arduino M346 Mini RTCpro DS3231 Clock Temperature Measure Module Real Time Clock Temperature Sensor and Controller Electronic Hobby Kit

Use DS3231 high precision real time clock chip (IIC interface rate of 400 KHZ). Reserved AT24Cxx IIC interface EEPROM memory interface, such as the need for welding. High precision 32.768 KHz removing crystal vibration chip internal integration, 0℃ to 40℃ range precision 2 PPM, in error about 1 minutes. The internal temperature sensor chip precision 3℃, a resolution of 0.5℃, measurable environmental temperature. Welding CR927 3 v battery charging. Join meter diode power supply end, connect the power supply without power not to burn. Set the power indicator light. Leads to the SQW/INT and 32 KHZ square wave output interface, can be different frequency square wave output or output clock interrupt. Other IIC can cascade equipment, welding 6 p bent pin.