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.