Philips SLV4200 EN - Manual (Page 6)

6 Important
1.5 Installation requirements
The product transmits and receives radio
waves when it is switched on. The
product complies with the standards that
are defined for it.
As the product is based on RF
technology, the quality of the image can
be influenced by microwave ovens,
Bluetooth, Wifi etc. Therefore the
product can suffer from the same kinds of
interference as GSMs, portable radios
and other RF-based products.