JIS C 8281-2-1:2004

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This Standard applies to electronic switches and to associated electronic extension units for household and similar fixed electrical installations either indoors or outdoors. It applies to electronic switches for a.c. only, for the operation of lamp circuits and motor circuits and the control of the brightness of lamps (dimmers) as well as the control of the speed of motors (for example, those used in ventilating fans) and for other purposes (for example, heating controls), with a rated voltage not exceeding 250V and a rated current not exceeding 16A. The operation and control as mentioned above are performed by a person via an actuating member, a sensing surface or a sensing unit, by means of touch, proximity, turn, optical, acoustic, thermal or any other influence. This Standard also applies to electronic switches where the operation or control is made by physical means, for example, light, wind velocity, presence of persons, etc. This Standard also applies to boxes for electronic switches, with the exception of mounting boxes for flush-type electronic switches. Electronic switches complying with this Standard are suitable for use at ambient temperature not normally exceeding 25 degrees C but occasionally reaching 35 degrees C. In locations where special conditions prevail, such as in ships, vehicles and the like and in hazardous locations, for example, where explosions are liable to occur, special constructions may be required