The 32435 is an OEM version of the fully populated CR300 datalogger wiring panel circuit board. The 32435 must be paired with the 32404 CR300 OEM Measurement Board. For more information about our OEM program, contact Campbell Scientific. For detailed information about the data logger's product specifications, refer to the CR300 Datalogger page. For a package that includes the 32404 and 32435, refer to the 33201 or CR300.