TP-Link SR20 User Manual page 11

Explanation of the symbols on the product label
Symbol Explanation
DC voltage
Indoor use only
RECYCLING
This product bears the selective sorting symbol for Waste electrical and electronic equipment
(WEEE). This means that this product must be handled pursuant to European directive
2012/19/EU in order to be recycled or dismantled to minimize its impact on the environment.
User has the choice to give his product to a competent recycling organization or to the
retailer when he buys a new electrical or electronic equipment.