| | Shin-Etsu Rubber Contact (RC) feature |
| Waterproofing | Added waterproofing function. |
| Contact | Gold plated contact is available in addition to low resistance carbon contact. |
| Soundproofing | Added soundproofing function. |
| Stroke | 1.5-2.0mm stroke is also available. |
| Feeling | Soft feeling is available by rubber. |
| Actuation force | Design of high actuation force like more than 4.0 N is available. |
| Design | Various kinds of key are available in one key pad. |
| PCB | PCB on one side design is available. |
| Colors | Various kinds of key pad color are available. |
| Number of keys | Cost advantage of number of keys in one keypad |
