X230 RS232 Seria Port & Real-time Clock (RTC) Expansion Board for Raspberry Pi

Features Useful communication board supporting the RS232 serial protocolControl the Raspberry Pi over RS232 or connect to external serial accessoriesConnected to the UART port on the Raspberry Pi using a MAX3232 interfaceAllowing communication with RS232 compatible devices over a DB9 serial cable or with the use of a null modem cableAllowing terminal access with linux on the Raspberry Pi using a terminal applicationThe RS232 port can be accessed through the DB9 port or the screw terminals on the PCBBattery backed real time clock module for the Raspberry PiKeeps track of the time while the Raspberry Pi is switched offAllows the Raspberry Pi to retrieve the current date and time when it is switched back onUses the most precise DS3231 RTC real time clock and a CR2032 battery to maintain the date and timePerfect for datalogging clock building time stamping timers and alarms etc Stackable with other Raspberry Pi accessory boardsA coin cell is required to use the battery backup capabilities We dont include one by default to make shipping easier for those abroadWIKI for reference Packing Included 1 x X230 board without button battery 1 x Install Screws packPS The battery model is CR2032 No include