| 1. Series | |||||||||||||||||
| NPB22 | Non-Illuminated | ||||||||||||||||
| NLB22 | LED-Illuminated | ||||||||||||||||
| 2. Type | |||||||||||||||||
| NPB22 | NLB22 | ||||||||||||||||
| F | Flush Head | T | Twist to Release Head (40Ø) | F | Flush Head | ||||||||||||
| E | Elevation Head | R | Twist to Release Head (40Ø) | E | Elevation | ||||||||||||
| M | Mushroom Head (40Ø) | S | Reset Push-Pull Stop Mushroom Head (35Ø) | M | Mushroom Head (40Ø) | ||||||||||||
| K | Mushroom Head (40Ø) with Key | D | Double Push Button | D | Double Push Button | ||||||||||||
| L | Flush Head Maintained | G | Mushroom Head (40Ø) Maintained | L | Flush Head Maintained | ||||||||||||
| P | Elevation Head Maintained | H | Flush Head Rest Push-Pull Stop Mushroom Head (40Ø) | G | Mushroom Head (40Ø) Maintained | ||||||||||||
| J | Twist to Release Mushroom Head(40Ø) | I | Twist to Release Mushroom Head (40Ø) | P | Elevation Maintained | ||||||||||||
| DM | Double Push Buttonwith Metal Frame | R | Twist to Releas Head (40Ø) | ||||||||||||||
| M6 | Mushroom Head (60Ø) | T | Twist to Releas Head (40Ø) | ||||||||||||||
| DM | Double Push Button with Metal Frame | ||||||||||||||||
| 3. Contact Block | 4. Color | 5. Voltage Rating | |||||||||||||||
| 10 | 1a | 21 | 2a1b | NPB22 | NLB22 | NLB22 | |||||||||||
| 01 | 1b | 12 | 1a2b | R | Red | R | Red | A | AC/DC 24V | ||||||||
| 11 | 1a1b | 22 | 2a2b | G | Green | G | Green | E | AC/DC 100-120V | ||||||||
| 22 | 2a | 02 | 2b | Y | Yellow | Y | Yellow | I | AC/DC 220-240V | ||||||||
| S | Blue | S | Blue | M | AC 380-440V | ||||||||||||
| B | Black | W | White | Y | AC/DC 12V | ||||||||||||
| W | White | ||||||||||||||||
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