Optoma Home Theatre Projector - Manual (Page 67)

WEEE
Disposal of old Electrical & Electronic Equipment (Applicable throughout
the European Union and other European countries with separate collection
programs)
This symbol found on your product or on its packaging, indicates that this
product should not be treated as household waste when you wish to dispose
of it. Instead, it should be handed over to an applicable collection point for the
recycling of electrical and electronic equipment. By ensuring this product is
disposed of correctly, you will help prevent potential negative consequences
to the environment and human health, which could otherwise be caused by
inappropriate disposal of this product. The recycling of materials will help to
conserve natural resources.
This symbol is only valid in the European Union.
If you wish to discard this product, please contact your local authorities or
dealer and ask for the correct method of disposal.