Siemens SCALANCE MM900 Series Compact Operating Instructions page 63

Railway approval
Media modules with the supplement (C) in the type name have varnished printed circuit boards
(conformal coating) and meet the requirements of the railway standard:
● EN 50155 "Railway applications - Electronic equipment used on rolling stock".
Note
When used on railway stock, a stabilized power supply must be used to comply with EN50155.
FDA and IEC approvals
The following MM900 media modules meet the FDA and IEC requirements listed below:
Media module
MM992-2CUC
MM992-2CUC (C)
MM992-2CU
MM992-2M12 (C)
MM992-2VD
MM992-2SFP
MM992-2SFP (C)
MM991-2 (BFOC)
MM991-2FM (BFOC)
MM991-2LD (BFOC)
MM991-2 (SC)
MM991-2LD (SC)
MM991-2LH+ (SC)
MM991-2P (SC RJ)
MM992-2 (SC)
MM992-2 (C) (SC)
MM992-2LD (SC)
MM992-2LH (SC)
MM992-2LH+ (SC)
MM992-2ELH (SC)
* You will find additional information in the compact operating instructions "Transceiver SFP/SFP+".
Figure 9-1
SCALANCE MM900
Compact Operating Instructions, 11/2019, A5E02630805-16
FDA and IEC approvals
CLASS 1 LASER PRODUCT
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Approvals
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