Casella CEL CEL-393 - Manual (Page 13)

CEL-433 Interface
Allows B (and D) version to be connected to conventional RS-232C
interfaces. Cables must be specified separately. See Section 5.3 of this
manual.
CEL-4627 Tripod
Will support either just microphone and preamplifier assembly or the
complete instrument. Supplied complete with carrying bag.
New accessories and operational configurations are being developed all
the time hence it is important to return the user registration card in order
to receive software and application information updates.
393 Handbook /9.