scope:

This specification covers the general requirements for manually operated illuminated and non-illuminated multistation, pushbutton switches for use in electronics and communications equipment.

The type designation shall be in the following form and as specified (see 6.2):

The switch style is identified by a two letter symbol "SM" followed by a two-digit number which specifies the design and configuration covered by a single specification sheet.

Switches are designated by a single letter in accordance with table I. TABLE I. Indication characteristic.

Symbol Indication characteristic ------------------------------------------- L - - - - - - Illuminated D - - - - - - Non-illuminated

The enclosure design is identified by a single digit in accordance with table II. TABLE II. Enclosure design.

Symbol Seal ---------------------------- 1 - - - - - - Unsealed 2 - - - - - - Dripproof 3 - - - - - - Watertight

intended Use:

The switches covered by this specification are intended for use as panel displays and switching devices in alternating and direct current applications.