1.Key frame uses special PC / ABS plastic.
2.Keys are made by secondary injection molding and words will never fall off, never fade.
3.Conductive rubber is made of natural silicone-corrosion resistance, aging resistance.
4.Circuit board using double-sided PCB (customized), contacts Gold-finger use of gold process, the contact is more reliable.
5. LED color is customized.
| Item | key pad 4x4 |
| Input Voltage | 3.3V/5V |
| Waterproof Grade | IP65 |
| Vandal roof Grade | IK08 |
| Working Life | More than 1 million time per key |
| Key Elasticity | 250g/2.45N |
| Key Travel Distance | 0.45mm |
| Working Temperature | -25℃～+65℃ |
| Storage Temperature | -40℃～+85℃ |
| Relative Humidity | 30%-95% |
It is mainly for access control system, vending machine, security system and some other public facilities.
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