Switch: microswitch TACT; OMRON Electronic Components
| Manufacturer | OMRON Electronic Components |
| DC contacts rating @R* | 0.05A / 12V DC |
| Contacts layout | SPST-NO |
| Type of switch | microswitch TACT |
| Mounting | SMT |
| Leads | for PCB |
| Min. insulation resistance | 100MΩ |
| Max. contact resistance: | 100mΩ |
| Actuator colour | black |
| Key stroke | 0.2mm |
| Mechanical durability | 100000 cycles |
| Button shape | rectangular |
| Operating temperature | -25...70°C |
| Switch. method** | OFF-(ON) |
| Operating Force | 1.59N |
| Button height*** | 1.2mm |
| Pitch | 1.7x4.2mm |
| Positions | 2 |
| Manufacturer series | B3U |
| Body dimensions | 2.5x3mm |
* at resistive load
** the position in bracket indicates momentary position.
*** measured from PCB