| Model | D-8837 |
| Number of Keys | 4 keys |
| Material | stainless steel |
| Dimension | 43x47.5mm |
| Key travel | 0.4mm |
| key switch lifespan | more than 2 million operations |
| Key graphics | laser-engraved legends & characters in a durable paint |
| Supply Voltage | +5V DC +/-5% |
| Communication interface | Matrix |
| Protection Level: | IP54(front panel) |
| Operating temperature | -40 ~+70 |
| Storage temperature | -40 ~ +80 |
| Certificate | CE FCC RoHS Compliant |
| OS support | DOS/Windows95/98/NT/ME/2000/2003/XP/Vista/7,8,10 Linux, Mac,etc |
| MTBF | >50000H |
| MTTR | <30min |
| APPLICATION | Bus Traffic Positioning System, Self-service kiosk, Industrial PC system, Vending Machine. |
