Heat Dissipation of SISNet Distance Extenders

Hi everyone, 

I am calculating power consumption and heat dissipation for my ESD cabinet.
This cabinet uses a redundant SISNet Distance Extender.

I have studied the document "Product-data-sheet-deltav-sisnet-fiber-components-en-57312.pdf".
This document displays only power consumption, not heat
dissipation.
Please help me with the heat dissipation information of SISNet Distance Extender device.
Thanks very much.