The CR295 GOES Datalogger includes an additional 9-pin serial port  that allows communications with a TX312 or the retired SAT HDR GOES satellite transmitter. Its single-ended input channel configuration and packaging are optimal for measuring one or two simple sensors. However, the CR295 does not make differential measurements and is not compatible with SDM devices, multiplexers, or thermocouples. (Refer to the Compatibility information for compatible sensors, peripherals, and software.) Recalibration services are not offered for the CR200-series dataloggers.