1. Features of mp3 player remote control1. Programmable remote control with customizable functions.2. The 18-button infrared keychain remote control is comfortable to handle, sensitive to keys, remote
1. Features of mp3 player remote control
1. Programmable remote control with customizable functions.
2. The 18-button infrared keychain remote control is comfortable to handle, sensitive to keys, remote control, and fashionable and beautiful in appearance.
3. The remote launch angle is 60 degrees.
4. The shell is made of ABS material, which is durable.
5. Support infrared ray
2. The mp3 player remote control supports OEM
1. Color of shell and key
2. Screen printing content of shell and key
3. PE/nameplate screen printing content
4. Key function.
5. Distance emission requirements.
Professional production of mp3 player remote control, mp3 car player remote control, supporting the development, customization and production of infrared and wireless remote control
How much do you know about remote control?
Common remote control categories in our life include infrared remote control (IR) wireless remote control (RF)
The difference between wireless remote control and infrared remote control:
Infrared remote control and wireless remote control For different carriers, infrared remote control uses infrared to transmit control signals, which is characterized by directionality and cannot be blocked. TV remote control is infrared remote control;
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The wireless remote control uses radio waves to transmit control signals, which is characterized by no direction, no "face to face" control, long distance (up to tens of meters or even several kilometers), and vulnerable to electromagnetic interference. It is easier to use radio remote control to solve the fields that need remote penetration or directionless control, such as industrial control. Radio Remote Control (RF Remote Control) is a remote control device that uses radio signals to control various remote mechanisms. After receiving these signals, the remote receiving equipment can command or drive other corresponding mechanical or electronic equipment to complete various operations, such as closing the circuit, moving the handle, starting the motor, and then these machines can perform the required operations. As a supplement to infrared remote control, remote control is widely used in garage doors, electric doors, door remote control, anti-theft alarm industrial control and wireless smart home!
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The load frequency of the commonly used wireless remote controller is 315mHz or 433mHz. The remote controller adopts the open frequency band specified by the state, with the transmission power less than 10mW and the distance of about 100m, without interference. The open frequency band of China is 315mHz, and that of Europe and the United States is 433mHz. Therefore, products exported to Europe and the United States should have many remote controls for the mHz products of the country.
The common coding methods of wireless remote control include fixed code and rolling code learning code copy. Scroll code is an upgrade product of fixed code. At present, the rolling code is used in any situation with confidentiality requirements. Copy the remote control and use it alone.
The wireless remote control is only used to send signals and codes. Of course, there is also the reception part: the reception part is generally divided into two types: superheterodyne and super-regenerative reception. The super-regenerative de-regulating circuit is also called the super-regenerative detection circuit. In fact, it is a regeneration detection circuit that works under intermittent oscillation. The superheterodyne demodulation circuit is the same as the superheterodyne radio. The oscillation circuit is set to generate the oscillation signal, which is mixed with the received carrier frequency signal to obtain the intermediate frequency (generally 465kHz) signal. The data signal is demodulated through the intermediate frequency amplification and detection. Because the load frequency is fixed, its circuit is simpler than the radio. The ultra-differential receiver is stable, sensitive and relatively good in anti-interference ability: the ultra-regenerative receiver is small in size and cheap in price.