RTC (REAL TIME CLOCK) MODULES

TM-619H Digital programmable electronic timer switch

Specifications

1. Operating voltage: 210V to 240V AC
2. Frequency range: 50Hz to 60Hz
3. Running accuracy : ± 1 second / day at 20°C
4. LED power indicator
5. Manual over ride switch

DS3231 High Precision RTC Clock Module

Specification:-

• DS3231 high-precision clock module for Raspberry Pi
• The module can also be used for Arduino motherboard
• The module itself can be adapted to 3.3 V and 5 V system
• Provide battery backup for continuous timing.
• Complete clock functions include seconds, minutes, hours, day, date, month, and year timing, and provide valid to 2100.

RTC I2c Modules DS1307 Digital Clock RTC Module AT24C32

Specification

• DS1307 I2C real-time clock chip
• 3V LITHIUM CELL 
• Two Wire I2C Interface
• The DS1307 is accessed via the I2C protocol
• (RTC) 24C32 32K I2C EEPROM memory