Two programmable daytime alarms and a 1 Hz output are available. The watch works in either 24 hour format or band/AM/PM format in 12 hour format. Safe enough: DS3231 RTC module. DS3231 RTC Precise Real-Time Clock I2C Module AT24C32 with Battery DS3231 I2C RTC Module Arduino | Elmech Technology Simple serial port to connect to most microcontrollers., 4., IIC bus interface, the maximum transmission speed is 400KHz (working voltage 5V)., 5., Can be cascaded with other IIC devices, 24C32 addresses can be short-circuited. GND GND Box contents: 6 x DS3231 real time clock RTC module For less than 31 days a month, the end date is automatically adjusted, including adjustments for the leap year. DS3231 AT24C32 Clock Module, Real Time Clock RTC IIC RTC Module for Arduino Module parameters: 1., Size: 38 mm (L) x 22 mm (W) x 14 mm (H)., 2., Weight: 7 g., 3., Packaging: anti-static packaging., 4., Clock chip: high-precision clock chip DS3231., 5., Memory chips: AT24C32 (storage capacity of 32 KB) 6., Operating voltage: 3., 3 - 5., 5 V., 7., Clock accuracy range: 0-40C, accuracy 2ppm, approx., 1 minute error., 8., The chip temperature sensor has an accuracy of 3., 9., Real-time clock generator for seconds, minutes, hours, day, date, month and year and provides a leap year compensation valid up to the year 2100., Product highlights: 1., Programmable rectangular wave output., 2., RST output/push button reset debounce input 3., Two day time alarms. A precise temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power outages and provide a reset output. The DS3231 RTC module is the most accurate and reliable real-time clock module to use in your Arduino projects. Unlike low-end timekeeping ICs found in basic timekeeping devices, the Arduino real time clock DS3231 features a temperature-compensated crystal oscillator (TCXO) that maintains its exceptional accuracy in varying environmental... In addition, it monitors that the RST pin generates a μP reset. Real Time Clock Module I2C For Arduino Raspberry Pi AT24C32 1 X DS3231 Real Time Clock RTC Module For Raspberry Pi Arduino 3.3V/5V AT24C32 Clock Module
