1. Frame and keys are made of RoHS approved zinc alloy material
2. Conductive rubber with carbon granules
- Contact resistance: ≤150Ω
- Elastic force: 200g
3. 1.5mm thickness UL approved printed circuit board with golden fingers
1.Button color: bright chrome or matte chrome plating.
2.Key frame color according to customer requirements.
3. With alternative interface.