the first category: infrared remote controller
easy-to-understand statement is that the principle of this remote controller is to first compile the corresponding code value between the remote controller and the remote-controlled machine, and then realize the remote control operation by infrared emission. This remote controller is the most common and widely used remote control method at present. Its advantages are low price and easy operation. There are also many manufacturers producing such remote controllers. Among them, Shenzhen, a developed first-tier city in China, is especially the most. Therefore, enterprises producing household appliances generally look for remote control manufacturers in Shenzhen.
infrared remote control is that it will not affect the surrounding environment or interfere with other electronic equipment. The disadvantage is that it cannot penetrate the wall, there can be no barrier between the wireless remote control and the receiver, the controllable distance is short and the sensitivity is not high.
The second category: 2.4GHz wireless remote control
2.4G is a wireless technology, which is referred to as 2.4G wireless technology because its frequency band is between 2.400GHz and 2.4835GHz.
a lot of available frequency points for the 2.4GHz remote controller are related to the transmission power. WIFI is a 2.4G product. Generally, the communication distance of the remote controller is about the same as that of WIFI. The remote controller using this transmission technology can not be affected by obstacles, and the remote control distance will be greatly enhanced, which can effectively solve the problem of difficult remote control.
2.4G is that compared with the traditional infrared remote controller, the wireless 2.4g remote controller gets rid of the problem of directivity. We can use the remote controller to operate the equipment at any position and angle in the house without worrying about the problem that the equipment cannot receive the signal. In addition, thanks to this, it is definitely a great boon for a remote control with empty mouse operation. In addition, the 2.4GHz signal transmission bandwidth is larger, which allows the remote control to perform more complex operations, such as voice and somatosensory operations, which makes the remote control experience better.
The third category: Bluetooth remote control
Bluetooth remote controller is to achieve a completely independent signal transmission channel through pairing with TV, thus avoiding interference between wireless signals of different devices. And because the Bluetooth signal transmission encryption is very good, we don't have to worry about the transmitted signal being acquired by others. As a supplement to 2.4GHz technology, Bluetooth remote control is also a development trend.
