Option 001 1MB memory expansion ONLY HF 4040 and above Strongly recommended for usingthe DATA LOGGER!

This memory expansion is a MUST-HAVE particularly when using the data logger, as the standard capacity can quickly become exhausted in this mode. The memory expansion provides space for more than 10,000 logs, while the standard memory will only accomodate approximately 100 of them.
Standard memory size is 64K.