UL standards
UL tag is Underwriter's Laboratories lnc acronym, is the 1984 U.S. fire Federation of Industry to establish a non-profit organizations.
Insurer laboratory companies (Underwriter's Laboratories lnc following abbreviations for the UL) each published in the field of production safety standards and norms, including in the prevention of crime, the prevention of explosions, automatic control, chemical safety, electricity safety, fire and Combustible Gas and oil fields. Who should be the requirements for testing. UL is the other part of the work has been published through the test directory list of products in order to provide users with convenient. UL safety standards formulated by the assumption that may arise in almost any situation, and when a product is being used, and in a very big scope of the strict confirmed. UL markings reflect the authority and reliability is extremely high, in the United States the majority of the states and cities, none of the UL tag sales are subject to legal control; even in the states have not, it seems that these products can only As a second-class cargo handling.

CSA standards
CSA is the Canadian Standards Association Canadian Standards Association) acronym, it can be established in Canada to buy the industrial product standards, in addition to such functions, in electronic products, CSA is a master of power agencies, to identify whether these products And standards. CSA maintained the Government and people of the greatest trust and power, almost all the provinces of Canada are the establishment of the institutions, the implementation of enacted laws and regulations take effect. In order to the provincial sales of electrical products, we must accept the CSA recognized. Therefore it can be said that Japan's exports to Canada from the electrical products must accept the CSA recognized and CSA showed that tag, otherwise these products has not legally recognized.

VDE standards
By the German Electrical Technology Association (Verband Deutscher Elektrotechniker) the establishment of the electrical testing center called VDE-Pruf-stelle. VDE be used as the electrical testing center stands for. VDE since 1893 has been 100 years since its establishment (read more than 80 years) history. If electrical equipment did not pass VDE, such equipment sales in Germany are free, but when some electronic equipment caused the deadly fire or electric shock when the German law on the role. If the product has been approved by VDE, the parties will waive the accident bear criminal responsibility. If this is not the case, the parties to the accident, will bear criminal responsibility, VDE is a kind of absolute standards, and with UL, CSA and other standards around the world together as the very high safety standards be included in the class.

SEV standards
In order to test electrical products and components, in 1903 to create a civil society organizations. Since 1954 those standards are approved by the Government of Switzerland, the Swiss business without SEV (Schweizerischer Electrotechischer Verein) recognition of electrical products and components are illegal.
In order to prevent the boiler accident, the German boiler maker alliance in 1875 the creation of an independent non-profit organizations. West Germany at that time in all 11 states generally use an independent test equipment.
TUV (Technischer uberwschungsverein) on plant and equipment carried out extensive testing, under normal circumstances, according to the Government's request. Also in accordance with VDE standards for testing and validation of electrical products.
TUV approved nationwide in an effective, rather than received by the state in which nothing to do with the VDE approved and has the same authority. Omron products approved by the TUVRhineland. TUV approved the use of the tags of two types: as shown in the above paragraph is a marker of the equipment; another tag is part of the equipment used. January 1, 1990 has also adopted a new tag.
TUV showed that the tag is recognized freedom selected.

LR standards
LR standard by Lloyd's Register of London published, all recognized the LR Omron control equipment are scheduled for UMS Marine. (UMS is Lloyd's Register of unmanned aircraft cabin ship's classification).
Unlike UL and other safety standards, UL standards in practical work on the marine environment in the test equipment.
LR on the product is not authorized to impose tags. However, Lloyd's Register published a directory of approved products for the table.

TV standards (LU / CSA)
Because the U.S. TV (TVs) fire disasters, as a turning point, from 1970 onwards by the UL implementation of tankers using the corresponding switch on the new requirements. CSA also come into effect from 1971 and UL almost the same as the new requirements. TV used by the switch at its request in the case of automatic fire extinguishing material of 94 VE-0, that is, using non-combustible materials, with at least 180 seconds of the anti-Tiaohuo capacity. In addition to this point, to control the opening area is less than a fixed number, and the contacts must be part of Tungsten Lamp load capability, including the ability instability in the start-up current, through such control of the switch, such as marked as TV-4 And called TV-rated switch.
These TV-rated switch to the standards required of companies, including insurers laboratory UL12780 (radio receivers, audio systems and accessories) and UL1410 (television receivers and video products), which in the receiving equipment will be used as a power switch Circuit control switch. Similarly, the CSA, the standard is CSA C22, Z, No.1 for the power control of radio, television and electronic devices. In addition to radio and TV reception equipment, of course, these standards are applied to the amplifier, camera, radio transceivers dual-use machine, Dian Changji, tape recorders and family use of other similar equipment outside. Note that when switching from the current rating for the 1:00 and equipment starting current of less than 21, do not need to use TV-rated switch, the switch may be currently in use. We must pay attention to, including television sets, tape recorders VTRs) and audio equipment, the equipment must be provided in the power circuit in the switch devices to be used by TV standards. Switching tests in the use of Tungsten Lamp as a load, and Tungsten Lamp to a separate set of characteristics.