12 Keysight 34921A-34925A User’s Guide
This symbol indicates the time period 
during which no hazardous or toxic 
substance elements are expected to 
leak or deteriorate during normal use. 
Forty years is the expected useful life 
of the product.
This instrument complies with the 
WEEE Directive (2002/96/EC) marking 
requirement. This affixed product label 
indicates that you must not discard 
this electrical or electronic product in 
domestic household waste.
Universal recycling symbol.
This mark indicates product has been 
designed to meet the requirements of 
"IP x y", where "x" is the solid particle 
protection and "y" is the liquid ingress 
protection.