The Ecumaster EDL-1 data logger is a "must have" for all professionals using EMU, EMU CLASSIC, and EMU BLACK devices. Using serial communication, it records over 200 data channels at 25Hz frequency. The use of popular SDHC cards with FAT32 file system makes reading data on a PC fast and easy. The average data rate allows approximately 11 hours of recording per 1GB of card memory. A battery-powered integrated RTC clock provides accurate time stamping. The EDL-1 also features a Bluetooth module for communication with an Android tablet.