1.Key frame uses special zinc alloy material.
2. Buttons are made of high quality zinc alloy, with a strong anti-destruction capability.
3. With natural conductive silicone rubber -weather resistance, corrosion resistance, anti-aging.
4. Double side PCB with golden finger, resistance to oxidation.
5. LED color is customized.
| Item | stainless steel keyboard |
| Waterproof Grade | IP65 |
| Ambient Noise | ≤60dB |
| Working Frequency | 300～3400 Hz |
| SLR | 5～15 dB |
| RLR | -7～2 dB |
| STMR | ≥7 dB |
| Working Temperature | -25℃～+65℃ |
| Relative Humidity | ≤95％ |
| Atmospheric Pressure | 80～110 K Pa |
It is mainly for access control system, industrial telephone, vending machine, security system and some other public facilities.
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