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infrared wireless dual -band audio speaker system(ks668-ab)
infrared wireless dual -band audio speaker system(ks668-ab)

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infrared wireless dule-band audio speaker system(ks668-ab) has larger receiving distance,up to 400sqm.

infrared wireless dual-band audio speaker system(ks668-ab)

Here is the Infrared Advantages:

1.Infrared light transmit signal,High Security,Interference Resistence and Against String Frequency

Infrared (IR) is short-range wave, cannot penetrate walls,which solve the string problems between the classrooms. It can realize that many sets of equipments used in many rooms simultaneously, so  it is safe and has good isolation.


2.Emitter can be equiped with any receiver,Operate Conveniently

We can use the same frequency in the different rooms beacause of no string frequency. teachers can use the same microphone in different rooms ,so it is conveniet to manage.


3.Using light refraction to achieve 360 ° sensing in 30 m, it there are barrier and turn of the teachers ,the transmitting distance can be 10m.


4.Away from the electromagnetic radiation and interference, create a healthy, environmental -protected, health, green campus.



   1. Suitable for classroom which already has speaker and amplifier and now wants to upgrading into infrared speaker system. Which saves money in the upgradation.

   2. Has two group audio frequency inputs, a group audio frequency output, a group of wired microphone input, amplitude of audio output can be adjustable.

   3. Can use four receiver to strengthen the receiving effect, the expansion area could be 400 sqm.





10.04''x3.27''x14.30''( 255x83x363mm)

Frequency Range


Reception Angle

360 degree

Power Requirements

220VAC  50Hz

Reception sensitivily




IR Receive Frequency

2MHz (encrypted)

Infrared Ray Wavelength


Wired microphone interface


Assembles PA

The upgrade host machine


KS-HG transmitter

1 set

Out-fitted receiver

1set (including15m signal line)

there are two kinds of mirophone for your reference, handhold MIC and chest-worn MIC with collar-clamp or headwear. You can choose the one u like.


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