Jaycar Raspberry Pi RTC Clock Module – DS3231 with CR927 Backup Battery

Your Pi keeps losing time every power cycle, or it's sitting off the network where it can't grab an NTP fix. That's annoying when your logging, scheduling, or data-stamping depends on a reliable clock. This Jaycar RTC module plugs onto the Pi's GPIO via a 5-pin header and gives you a battery-backed time source that just holds. Based on the DS3231 IC, backed by a CR927 cell. Set it once, power off, power back on – time's still right. No Wi-Fi needed

• I2C interface – connects via 5-pin header straight onto Pi GPIO
• Based on the highly accurate DS3231 real-time clock IC
• CR927 backup battery retains time through power loss or extended outages
• Ideal for offline Pi builds, intermittent-power projects, and logging applications