1. Key frame uses 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.
Item
phone number pad
Input Voltage
3.3V/5V
Waterproof Grade
IP65
Vandal roof Grade
IK09
Working Life
More than 1 million time per key
Key Elasticity
250g/2.45N
Key Travel Distance
0.45mm
Working Temperature
-25℃~+65℃
Storgage Temperature
-40℃~+85℃
Relative Humidity
30%-95%
It is mainly for industrial telephone, security system and some other public facilities.