RoHS appliance

Full description of The Restriction of the use of certain Hazardous substances in Electnical and Electronic Equipment, also called 2002/95/EC policy, ruled the max content of six item harmful materials in 2005/618/EC.

ISO/IEC Standards
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National Bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and nongovernmental in liaison with ISO and IEC, also take part in the work.

IEC

IEC (International Electrotechnical Commission, Geneva , Switzerland , www.iec.ch) An organization that sets international electrical and electronics standards founded in 1906. It is made up of national committees from over 60 countries.

IEC standards cover a vast range of technologies from power generation, transmission and distribution to home appliances and office equipment, semiconductors, fibre optics, batteries, flat panel displays and solar energy, to mention just a few. Wherever you find electricity and electronics, you find the IEC supporting safety and performance, the environment, electrical energy efficiency and renewable energies.

SASO

Prior to Saudi Arabia's accession to the WTO, all consumer products shipped to the Kingdom were required to have a Certificate of Conformity in accordance with the International Conformity Certification Program (ICCP) certificate. The Certificate of Conformity served to ensure that products destined for the Saudi market were in compliance with standards set by the Saudi Arabian Standards Organization (SASO). SASO is in charge of formulating national standards for all commodities and products, as well as standards concerned with metrology, calibration, marking and identification of commodities and products, methods of sampling, and inspection and testing.

Under the ICCP, each shipment destined for the Saudi market had to provide evidence of conformity to SASO requirements through the ICCP certification process. Shipments arriving to the Kingdom's ports of entry without a Certificate of Conformity were rejected

UL

The UL stands for "Underwriters Laboratory".  It used to be an Insurance Industry organization, but now it is independent and non-profit.  It tests electrical components and equipment for potential hazards.  When something is UL-listed, that means that the UL has tested the device, and it meets their requirements for safety - ie: fire or shock hazard.  It doesn't necessarily
mean that the device actually does what it's supposed to, just that it probably won't kill you.

The UL does not have power of law in the U.S. -- you are permitted to buy and install non-UL-listed devices.  However, insurance policies sometimes have clauses in them that will limit their liability in case of a claim made in response to the failure of a non-UL-listed device.  Furthermore, in many situations the NEC will require that a wiring component used for a specific purpose is UL-listed for that purpose.

Indirectly, this means that certain parts of your wiring must be UL-listed before an inspector will approve it and/or occupancy permits issued.