Feature

●Comparator Circuit Design: Using an independent comparator circuit, although the circuit is slightly more complicated, the structure and principle are easier to understand.
●LED will Flash with Music: The louder the sound, the more the LED will light up from bottom to top. As the sound fluctuates, the LED will flashing with the music.
●Easy to Use: The VU meter is a voice‑activated sensor, so there is no need to connect audio, just power on the product, it will flash when there is a sound. Size: Length 10cm / 3.9in x width 3cm / 1.2in.
●Power Supply: DC 5V-12V is Available, the Board Comes with a Microusb Socket, You Can Use the Corresponding Mobile Phone Charging Cable to Plug in the Power Supply, and 2 Pad Ports Are Reserved for Users to Lead Their Own Wires.
●Protect the Circuit: Equipped with anti‑reverse connection protection diode, which can effectively prevent the circuit from being burnt due to the reverse polarity of the power supply. DC voltage between 5V and 12V can be powered, with reverse connection protection.


Description

1013210224711-11013210224711-1

DC 5V-12V VU Meter LED VU Meter Module Voice Control Reverse Polarity Protection 10cm X 3cm Melody Light for Testing Sound Level

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Easy to use: The VU meter is a voice-activated sensor, so no audio connection is required. Just turn on the product, it will flash when a tone sounds. Size: Length 10 cm/3.9 inches x Width 3 cm/1.2 inches.


Comparator circuit design: Using an independent comparator circuit, although the circuit is a little more complicated, the structure and principle are, easier to understand.


Protect the circuit: Equipped with a reverse polarity protection diode, which can effectively prevent the circuit from burning due to the reverse polarity of the power supply. DC voltages between 5V and 12V can be operated, with reverse polarity protection.

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Usage:


About signal input:


The board comes with a microphone, no need to connect an audio signal, it can detect and receive an external sound source and the flashing of the LED -Control lamp beads. The disadvantage is that the sensitivity is not as good as line input and is easily affected by other external noise.


If you need a line input, this step is about the audio signal (for example The headphone power amplifier of a mobile phone or computer cannot be connected to the output of the power amplifier or speaker), you can remove the microphone and the signal is fed directly from the microphone. When the lights are on, adjust the potentiometer counterclockwise to decrease) This connection is recommended.




Specification:


Item Type: VU Meter


Material: Plastic


Size: Length 10cm/3.9 inch x Width 3cm/1.2 Inch;


Lamp beads: 5mm round head fog-like LED, uniform and non-glare (multi-color optional);


Power supply: DC 5V-12V is available, the board comes with a Micro USB socket supplied, you can use the corresponding mobile phone charging cable to connect the power adapter, and 2 pad ports are reserved for users to run their own wires;



Package list:


1 x VU meter




Note:


The signal sensitivity is adjustable, the built-in adjustable potentiometer can be adjusted by about ten turns, and you can hear a tick inside the potentiometer when you turn it up to the Set end, counterclockwise to decrease, clockwise to increase.

Product information