Sound sensor module

The LM393 Sound Detection Module is a compact, plug-and-play microphone sensor that detects sound levels in the environment. It can sense claps, knocks, or any loud noise and output a digital signal when the volume exceeds a set threshold. This module is widely used in DIY electronics, voice-activated projects, sound-reactive lights, and security alarms.

Compatible with Arduino, Raspberry Pi, ESP8266, and other microcontrollers, it’s a great addition to any beginner or advanced maker’s toolkit.

✅ Key Features:

🎤 Detects sound intensity from environment

🎚️ Adjustable sensitivity via onboard potentiometer

🔌 3-pin digital output interface (easy connection)

💡 Onboard power and output LEDs for visual indication

🧠 Perfect for sound-based triggers and automation

📐 Specifications:

ParameterDetailsSensor TypeElectret MicrophoneOperating Voltage3.3V – 5V DCOutput TypeDigital (High when sound is detected)SensitivityAdjustable (via potentiometer)Interface PinsVCC, GND, D0LED IndicatorsPower (Green), Output (Red)Comparator ICLM393Detection Distance~30cm (depending on sound level)Dimensions~32mm x 14mm

🚀 Applications:

Clap-activated lights or devices

Voice or sound-controlled systems

DIY alarms or noise detectors

Sound-reactive LED displays

Arduino/ESP8266/ESP32 projects

Interactive art or musical setups

7 days replacement warranty applicable only for manufacturing defects. No warranty for physical damage or misuse.

Q1. Are these products tested before shipping?

A: Yes, all components are pre-checked and securely packed to ensure they are in working condition at the time of dispatch.

Q2. Do you offer a warranty?

A: Yes, we offer a 7-day replacement warranty only for manufacturing defects. Physical damage or misuse is not covered.

Q3. How can I claim a replacement?

A: If there’s a manufacturing issue, please contact us within 7 days of delivery with an unboxing video and a clear description of the issue. We’ll guide you through the process.

Q4. How long will delivery take?

A: Orders are usually shipped within sameday if ordered before 2pm & next day dispatch for after 2pm orders. Delivery time depends on your location and courier partner, typically 3–7 working days.

Q5. Is GST invoice available?

A: Yes, we provide a GST invoice with every order. Please enter your GST details at checkout if applicable.

Still have questions?

📩 Chat with us via the WhatsApp icon or email us at enquiry@circuitranger.in