Simrad HS50 - Manual (Page 26)

Simrad HS50 Heading Sensor
18
20221081 / F
3.6 Processing unit
The Processing unit is not waterproof and should be mounted
vertically in a dry place. Reserve sufficient space below the unit
to allow insertion for cable connections.
It is recommended that ventilation or air conditioning is
provided in order to keep the ambient operating temperature
below +55ºC (+130ºF). The best location is typically in the
instrument room or on the bridge.
Dimensions for the Processing unit are shown on page 53.
Use the supplied mounting screws for fastening the Processing
unit as shown on the figure below.