• P- 38 Mono Socket Box Type ( Plastic Print Email To A Friend)
• AX Brand 100% Pure Copper Wire with High Quality Connectors.
• ABS Plastic & Brass Pin High quality so it doesn’t suffer from insertion losses.
• Provides protection against electromagnetic interference.
• This wire is made in India.

1. Support a maximum of 80 voice commands, with each voice 1500ms (one or two words speaking).
2. Maximum 7 voice commands effectively at the same time.
3. Arduino library is supplied.
4. User-control General Pin Output.
5. Analog Interface: 3.5 mm mono-channel microphone connector +  microphone pin interface.

Bluetooth 3.0 Stereo Audio Receiver Module can receive the audio signal of MP3 and other popular formats. It's very easy to connect and operate, and once connected to the other Bluetooth device like your phone or laptop etc. it can receive the signal and convert it into the output form which is compatible with the speakers. It has 3 output terminals  L Out, R Out and GND to which you can directly connect your wired earphone using a 3.5mm female jack or if you want to drive a big speaker you can connect its output to the input of a good amplifier system.

1. Strong TPA3110 chip is a digital power amplifier chip, with low idle loss characteristics, which makes it work well and quickly.
2. Onboard, front-facing IC to improve the input sensitivity, high-definition sound quality.
3. It can be used for car vehicle computer speaker, family audio and video, and empty square.
4. This product has the characteristics of loud sound, the capacitance is large, excellent sound quality.
5. There is no solder joint on the back of the circuit board, the chip capacitors, and the solder board together, so there is no possibility of a short circuit.

Features 

• An easy to use 10 seconds of voice recording.
• High-quality, natural voice restored.
• Can be used as a propaganda module.
• With looping, jog playback, single-pass play function.
• Available single-chip control.
• This module can directly drive a small speaker 8 ohms 0.5W.
• Audio recording control mode: the key to control or microcontroller, IO has drawn the line of control.

This TPA3118 PBTL Mono Digital Amplifier Board 1X60W 12V 24V Power Amplifier Module comes with very good sound quality. The module equips Mono digital audio power amplifier chip.

It has high output and low power consumption.

TPA3110 Mono Channel Digital Amplifier Board 30W Power Amplifier Module is useful in applications like DIY Bluetooth speaker, home and car audio system modification.

Applications:

• In robots that speak or generate sounds to indicate activities
• Portable Speakers
• LCD Monitors / TV Projectors
• Arduino or Raspberry Pi Game Machines
• Speaker Phones

• Audio input: 1. Bluetooth audio reception 2. USB decoding playback 3. TF card decoding Decoding support playback formats: MP3, WMA, WAV, FLAC.
• DC 8-26V input voltage for power supply.Size: 85mm x 52mm.
• The wireless receive distance can be up to 15m(shielded signals). BT 4.0, a perfect BT audio receiver board for use.

1. Strong TPA3116D2 chip is a digital power amplifier chip, with low idle loss characteristics, makes it work well and quickly.
2. Onboard, front-facing IC to improve the input sensitivity, high-definition sound quality.
3. It can be used for car vehicle computer speaker, family audio and video, and empty square.
4. This product has the characteristics of loud sound, the capacitance is large, , excellent sound quality.
5. There is no solder joint on the back of the circuit board, the chip capacitors and the solder board together, so there is no possibility of short circuit.

DC12-24V TPA3116D2 2.1 Channel Digital Subwoofer Power Amplifier Board adopts two high-quality TPA3116D2 digital amplifier chips. Sound quality is very good, high efficiency and amplifying power. 50W x 2+100W 2.1 channels (left/right channel and subwoofer channel), high efficiency and low-heat. Users can adjust the volume by themselves easily. It is powered by DC 12-24V, wide input voltage.

The power amplifier circuit board designed using the official standard. the chip uses a selection of US imports original Longding micro Class D amplifier chip. Good product chip is necessary and the majority of music lovers to share. this is our consistent philosophy! The amplifier with ultra-high efficiency. large power. in the case of 12V power supply can output 10W + 10W of power. the chip without fins. but also with overheating. over-current protection function. the function can be said to be very powerful.

How to use:

1. The power supply voltage limit is 16.5V, do not use more than this voltage.
2. The power supply is recommended for 12v, 3A power supply filter better.
3. 4-8 inch stereo speakers recommended.
4.  Do not short-circuit the audio output to each other or shorted to ground.
5. Carefully check before electricity, ensure the wiring is correct before electricity.

PAM8406 Digital Amplifier Module With Volume Control Potentiometer is an excellent noise suppression module. If you don’t receive input audio, you will not hear any noise on your ears.

1. PCB size is about: length 30mm width 22mm overall height after installed is about 16mm
2. Built with switch Potentiometer, can adjust the volume & control power switch freely!
3. Flexible assembly usage.

1. A d-type amplifier without a filter, low quiescent current, and low EMI.
2. When connects with a 4-ohm load and 5V power supply, the output power can be up to 3W.
3. Low THD, low noise.
4. Short circuit protection; thermal protection.

Application :

• Bluetooth Stereo Audio hands-free/headsets
• In robots that speak or generate sounds to indicate activities
• Portable Speakers
• LCD Monitors / TV Projectors
• Arduino or Raspberry Pi Game Machines
• Speaker Phones

1. Supports sampling rates (kHz): 8 / 11.025 / 12/16 / 22.05 / 24/32 / 44.1 / 48.
2. 24-bit DAC output, dynamic range support: 90dB, SNR support: 85dB.
3. Fully supports FAT16, FAT32 file system, maximum support 32G TF card, support U disk to 32G, 64M bytes of NOR FLASH.
4. A variety of control modes are available. IO control mode, serial mode, AD key control mode.
5. The broadcast language spots feature, you can pause the background music being played. Advertising finished playing back background sound to continue playing.
6. The audio data is sorted by folder, supports up to 100 folders, folders can assign every 255 Tracks
   7,30 level adjustable volume, adjustable EQ 6.

• THIS IS A MICRO HDMI TO VGA CONVERTER WITH AUDIO CABLE.
• THIS SUPPORT VIDEOS OUTPUT IN VGA: 1920*1200@60HZ ( MAX )
• THIS HAS LINE-OUT AUDIO OUTPUT.
• POWER FROM HDMI CONNECTING DEVICE.
• ONE CHIP HDMI RECEVIER WITH EQUALIZER SUPPORT.

XD-21 LM358 Gain Amplification Module Operational Amplifier Module is based on the LM358 operational amplifier which is a high-gain, frequency compensated operational amplifier designed to operate from a single power supply over a wide range of voltages. It is used in conventional operational amplifier circuits that need to be operated from a single power rail.

1. Support HD resolution, super clear picture, fast transmission speed
2. The maximum signal range up to 1920 X 1200, 1080p;
3. Video input signal: 5Volts p-p(TTL) ;
4. Support VGA video bandwidth: 10 bit, 162MHz
5. Video amplifier bandwidth: 162MHz
6. Support resolution up to 1920 X 1200, reduce blank signal during transmit.
7. No external power supply, plug, and play.

1. Compliant with Bluetooth v4.0 specification
2.  Highly replaceable, fully compatible with the Bluetooth modules of our other Bluetooth chips, no need to change the design to directly replace
3.  3/5 button inputs (switching / pairing / answering / hanging, play / pause, volume +, volume -, previous, next)
4.  Built-in DSP can realize echo cancellation, environmental noise elimination, EQ adjustment sound effects, etc.
5.  Module own antenna, good RF distance, and consistency
6.  128K EEPROM
7.  USB sound card function
8.  AUX-IN input switching function

Buy the new Voice Microphone online at Robu.in. This Voice microphone is Multi-Channel and is suitable for mobile phones, telephones, tape recorders, voice-activated toys, computers, and other products. The sensitivity is in accordance with the IEC standard, and the sensitivity of “pa” is increased by 20dB, which is the same as the sensitivity of the “Ubar” unit.

It is a great solution to share cool music, movies and games with your families and friends3.5mm Stereo headphone adaptor lead. Stereo 3.5mm jack plug to two Stereo 3.5mm sockets. Allows 2 pairs of headphones can be connected to an iPod MP3 player to allow both people to listen at once.