Siemens SIMATIC RF650R Configuration Manual page 18

Commissioning
4.1 Important notes on using the device
NOTICE
Alterations not permitted
Alterations to the devices are not permitted. If this is not adhered to, the radio approvals,
the relevant country approvals (e.g. CE or FCC) and the manufacturer's guarantee are
invalidated.
Overvoltage protection
NOTICE
Protection of the external 24 VDC voltage supply
If the module is supplied via extensive 24 V supply lines or networks, interference by strong
electromagnetic pulses on the supply lines is possible, e.g. from lightning or the switching
of large loads.
The connector for the 24 VDC external power supply is not protected against strong
electromagnetic pulses. Make sure that any cables liable to lightning strikes are fitted with
suitable overvoltage protection.
Repairs
Repairs only by authorized qualified personnel
Repairs may only be carried out by authorized qualified personnel. Unauthorized opening of
and improper repairs to the device may result in substantial damage to equipment or risk of
personal injury to the user.
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WARNING
SIMATIC RF650R/RF680R/RF685R
Configuration Manual, 10/2015, C79000-G8976-C386-03