K-style dynamic noise reducing handset A20
Description：
It is mainly for access control system, industrial telephone, vending machine, security system and some other public facilities with noisy voice from surrondings. This handset is with noise reducing microphone and could cancel the around noise.
- product description
1. Shell is made of Special PC/ ABS
2. 304# stainless steel armoured cord or PVC coiled Cord
3. Pierce-proof and Hi-Fi transmitter and receiver.
1. The length of the tube is flexible,standard is 900mm, the diameter of the tube :Φ8.4mm，Φ7.8mm，Φ6.5mm
2. Connector can be chosen: Y-spade,RJ11,XH-pg,USB,Audio Jack, Aviation Joint, XLR Connector,ect.
3. High strength steel rope diameter can be chosen:standard is Φ1.6mm, other diameter is Φ2.0mm,Φ2.5mm
4. Handset Color: standard is black or red, other color can be customized.
5. Microphone: Electret microphone or Dynamic microphone.
Specification
|
Waterproof Grade |
IP65 |
|
Ambient Noise |
≤60dB |
|
Working Frequency |
300～3400 Hz |
|
SLR |
5～15 dB |
|
RLR |
-7～2 dB |
|
STMR |
≥7 dB |
|
Working Temperature |
-30℃～+50℃ |
|
Relative Humidity |
≤95％ |
|
Atmospheric Pressure |
80～110 K Pa |
Application
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