Wireless 21 Key Remote Control Rubber Whole Sale Infrared Remote Control 38k Rubber Buttons 21 Key IR Remote Control Rubber Key

Wireless 21 Key Remote Control Rubber Whole Sale Infrared Remote Control 38k Rubber Buttons 21 Key IR Remote Control Rubber Key

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≥20 Pieces

US $0.5

≥5000 Pieces

US $0.4

≥500000 Pieces

US $0.25

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Place of Origin:: Guangdong, China

Product name:: 21 key mini car mp3 player remote control

Application:: 21 button ir mini radio remote control

Color:: black

MOQ:: 20 pieces

Model:: 21 key small infrared remote control

Keyword:: 21 keys bt remote control

Packing:: plastic bag or the carton can be customized

Usage:: VCD, DVD and VCR to multiple TVs or speakers

Feature:: 21 key audio remote volume control

Quick Details

Function:: LED Touch Control, Digital LED Display, Heat Adjustment, LED indicator light, Single Service, Voice control, Mini Keyboard

Brand Name:: DX

Model Number:: silver-21 button-remote control-rubber

Place of Origin:: Guangdong, China

Product name:: 21 key mini car mp3 player remote control

Application:: 21 button ir mini radio remote control

Color:: black

MOQ:: 20 pieces

Model:: 21 key small infrared remote control

Keyword:: 21 keys bt remote control

Packing:: plastic bag or the carton can be customized

Usage:: VCD, DVD and VCR to multiple TVs or speakers

Feature:: 21 key audio remote volume control

Product Description

specification

Remote control technology, also known as remote control technology, refers to the remote control of controlled targets, which is widely used in industrial control, aerospace, and home appliance fields. Infrared remote control is a wireless, non-contact control technology with significant advantages such as strong anti-interference ability, reliable information transmission, low power consumption, low cost, and easy implementation. It is widely adopted by many electronic devices, especially household appliances, and is increasingly applied to computer and mobile phone systems. Infrared, also known as infrared light waves, in the electromagnetic spectrum, the wavelength range of light waves is 0.01um-1000um. According to the different wavelengths, it can be divided into visible light and invisible light. Wavelengths ranging from 0.38um to 0.76um can be classified as visible light, with seven colors in sequence: red, orange, yellow, green, blue, blue, and purple. Light waves ranging from 0.01um to 0.38um are ultraviolet light (lines), while light waves with wavelengths ranging from 0.76um to 1000um are infrared light (lines). Infrared light is divided into four categories based on wavelength range: near-infrared, mid-infrared, far-infrared, and polar infrared. Infrared remote control uses near-infrared light to transmit remote control commands, with wavelengths ranging from 0.76um to 1.5um. The use of near-infrared as a remote control light source is due to the fact that the peak wavelengths of the emission and reception of infrared emitting devices (infrared light emitting tubes) and infrared receiving devices (photodiodes, transistors, and photocells) are generally between 0.8um and 0.94um. In the near-infrared light band, the spectra of the two coincide exactly, which can match well and achieve high transmission efficiency and reliability The transmission circuit of infrared remote control uses infrared light-emitting diodes to emit modulated infrared light waves; The infrared receiving circuit is composed of an infrared receiving diode, a transistor, or a silicon photocell, which converts the infrared light emitted by the infrared transmitter into corresponding electrical signals, and then sends them to a post amplifier. A transmitter is generally composed of several parts, including an instruction key (or joystick), an instruction encoding system, a modulation circuit, a driving circuit, and a transmission circuit. When the command key is pressed or the operating lever is pushed, the command encoding circuit generates the required command encoding signal. The command encoding signal modulates the carrier wave, and then the driving circuit amplifies the power before the transmitting circuit sends out the adjusted command encoding signal. The receiving circuit generally consists of several parts, including the receiving circuit, amplification circuit, modulation circuit, instruction decoding circuit, driving circuit, and execution circuit (mechanism). The receiving circuit receives the modulated encoded instruction signal issued by the transmitter, amplifies it, and sends it to the demodulation circuit. The demodulation circuit demodulates the modulated instruction encoded signal, which is then restored to the encoded signal. The instruction decoder decodes the encoded instruction signal, and finally the driver circuit drives the execution circuit to achieve operational control of various instructions

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Specification

model	material	interface	color
3.5mm to 2 female 6.5mm	pvc	3.5mm male	black
male to 2 female rca	pvc	rca male	black
3.5mm to 2 female rca	pvc	3.5mm male	black
3.5mm female to 2 male rca	pvc	3.5mm female	black
3.5mm female to 2 female rca	pvc	3.5mm female	black
6.5mm male to 3.5mm female	metal	6.5mm male	copper
3 female to 3 female rca	pvc	rca female	black
female to 2 female rca	pvc	rca female	black
male rca to female 3.5mm	pvc	rca male	black