Sound / Voice Detection Module — 3.3V to 5V Key benefits Simple integration: Provides a digital switching output (0 and 1, high/low) so your controller receives a clear on/off signal when sound is detected. No complex analog reading required. Easy to mount: Built-in fixed screw hole lets you secure the sensor quickly to enclosures, panels, or project frames. Wide voltage compatibility: Works with common logic levels and development boards that use 3.3V or 5V power rails. What it does Detects sound and converts the event into a digital output (high or low) suitable for triggering circuits, relays, or microcontroller inputs. Designed for voice-activated functions such as switching lights or generating a control pulse when sound is present. Important attributes Function: Sound-activated switching; voice sensor for control of devices such as lights. Output: Digital switching output (0 and 1, high-low). Voltage: Operating voltage 3.3V–5V, compatible with typical microcontrollers and logic families. Installation: Fixed screw hole for straightforward, secure mounting. Module type: Sound detection / voice sensor module intended for direct integration into projects. Typical applications Voice-controlled lighting: Use the module to turn lamps or indicator LEDs on and off in response to claps, shouts, or spoken commands. Security and monitoring: Trigger alarms, recordings, or alerts when unexpected noises are detected in a monitored area. DIY electronics and automation: Interface directly with Arduino, Raspberry Pi (3.3V logic), ESP boards, or other 3.3V–5V controllers to add sound-based controls to prototypes and products. Why choose this module Delivers a straightforward digital signal that simplifies firmware and wiring. Mounting hole reduces installation time and keeps projects tidy. Voltage flexibility allows use across a range of common development platforms without extra level shifting.