What is a radio frequency remote control?

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asked Mar 9 in Electron Microscopy by usensor (560 points)

The biggest advantage of radio frequency remote controls is the working range: they can transmit at a distance of up to 30 meters from the receiver (the transmission distance of Bluetooth is shorter), and wireless signals can pass through walls. Because of the above advantages, you will look everywhere for infrared/RF remote controls for home theater components. These remote controls use an infrared/RF converter to extend the transmission range of the infrared remote control.

The learning remote controller can receive and store the codes transmitted by other remote controllers; and then transmit these codes to control those devices that can understand the codes. For example, you have a receiver with a pre-programmed remote control, and then you buy a new TV with a learning remote control. The learning remote control receives the signals sent by the remote control of your receiver, and remembers these signals so that you can control the receiver. It is not necessary to enter the command code yourself-the learning remote control can receive and store the signals sent by other remote controls. All learning remotes are considered universal remotes because they can control multiple devices.

Some infrared remote controllers can send infrared and radio frequency signals. Radio frequency signals do not control radio frequency equipment (in fact, they cannot control radio frequency equipment). It means that the operating range of the infrared remote control extends from about 9 meters to about 30 meters (provided or acquired) and allows the signal to pass through walls and glass covers. The remote control automatically transmits infrared and radio frequency signals for each command. When using the IR/RF converter of the receiver terminal (some IR/RF remote controllers are included, some are sold as accessories), it receives the signal and converts the signal into an infrared pulse that the device can understand. This way your infrared remote can increase the volume of the home theater from the bedroom upstairs.

When using the radio frequency remote control once, the user needs to pair the remote control with the product. If the remote control is not paired, the remote control cannot be used. Because the remote control of each series of products is also very different, so during the pairing process Follow the instructions on the manual for related operations.

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