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The difference between radio remote control and infrared remote control
Release time：
2023-03-23 16:53
source：
The carrier frequency commonly used in radio remote control is 315mHz or 433mHz. The remote control uses an open frequency band specified by the state. In this frequency band, if the transmit power is less than 10mW, the coverage area is less than 100m or does not exceed the range of the unit, you do not need to go through the "radio The management committee" approves and uses freely. my country’s open frequency band is specified as 315mHz, while Europe and the United States and other countries specify it as 433mHz, so products exported to these countries should use 433mHz remote controls.
There are two types of coding methods commonly used in radio remote control, namely fixed code and rolling code. Rolling code is an upgraded product of fixed code. Rolling coding is used where confidentiality is required.
The difference between IR and RF Remote Control (The difference between IR and RF Remote Control). Infrared remote control and wireless remote control are for different carriers. Infrared remote control uses infrared to transmit control signals. Its characteristics are It is directional, can not be blocked, the distance is generally no more than 7 meters, and is not subject to electromagnetic interference. The TV remote control is an infrared remote control; the radio remote control uses radio waves to transmit control signals, and its characteristics are non-directional, It can be controlled without "face-to-face", the distance is long (up to tens of meters, or even several kilometers), and it is susceptible to electromagnetic interference. In areas that require long-distance penetration or non-directional control, such as industrial control, etc., it is easier to use a radio remote control.
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