ITEM NAME:DS1302 real-time clock module real-time module CR2302 button battery with B N1H8 DS1302 real-time clock module real-time module CR2302 button battery with B N1H8 New brand, high-quality real-time clock modules, CR2302 button battery of integrated FRI material is recommended here in particular. With integrated button battery Offer second, minute, hour, day, date, month, year Until the last day, a few months up to 31 days, including corrections for leap year, will be automatically taken into account. If the operating voltage is 2.0 V, it is less than the current 300nA. Dimensions: 4.5 × 2.4 × 1cm The main performance indicators of the DS1302 Single-byte, multi-byte transmission for reading or writing clock and RAM data. 8 foot SOIC encapsulation of 0.8 m DIP mount or optional, follows the surface mounting. Equipped with a 3-line interface Integration with CR2032 button battery specification: Material: FRI Wide operating voltage :2.0V - 5.5V Wiring: VCC / GND / CLK / DAT / RST package:1 x real-time clock module Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm..The main performance indicators of the DS1302. Single-byte, multi-byte transmission for reading or writing clock and RAM data. Equipped with a 3-line interface. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.