题目内容
The two drawbacks of infrared communications are actually advantageous in some regards .
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Interference cannot work in infrared communications and the message is sure to reach your intended recipient.
Transmission of data via low-power radio waves doesn’t interfere with one another.
Bluetooth is a kind of wireless connection，so it is unavoidable to interfere with one another device.
Bluetooth devices sends out very weak signals of about 1 milliwatt, so it can avoid interfering with other systems.
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