What is the type and lifespan of the battery that retains the DR240 main unit settings?

The DR130 can record data in 10 colors from all measurement points at 2-second intervals. It has a variety of recording functions including analog trend recording over an effective recording width of 150 mm, recording of digital measured values, recording of various messages, zone recording, and partially compressed and expanded recording, thus enabling data to be read off speedily.

Model Name: DR231

DR232 (Expandable model only)

Model Name: DR241

Model Name: DR242