Applicable for a remote control in the electric lines of electromagnetic starters, contactors, relays and others of AO50/60Hz, up to 660V of voltage and up to 440V of DC voltage.
| Derived code/code of auxiliary specification | Meaning | Derived code/code of auxiliary specification | Meaning |
|---|---|---|---|
| Non-letter | General-type | DN/S | With a lamp neon lamp, with a plastic shielding |
| Non-letter 1((1) marks three of "imagery marks for operating metal cutting machine tool" of JB2283-78) | General-type, button with imagery marks | DM | Mushroom-lamp button |
| X/2 | Knob-type, three-position | M/1 | Mushroom-lamp type dia.35 |
| X/3 | Knob-type, three-position | M/2 | Mushroom-lamp type dia.60 |
| Y/2 | Keg-type, two position | 2S/1 | Self-locked type dia.35 |
| Y/3 | Keg-type, three position | 2S/2 | Self-locked type dia.60 |
| D/J | With a lamp, incandescent lamp, with a plastic shielding | XB/2 | Rotary-handle type, two-position |
| D/S | With a lamp, incandescent lamp, with a plastic shielding | XB/3 | Rotary-handle type, three-position |
| DN/J | With a lamp, neon lamp, with a metal shielding | N/A | N/A |