The Whadda WPSE309 high sensitivity sound detection module detects sounds between 48 and 66 dB and has an analog as well as a digital output. The AO or analog output creates a real-time output voltage signal of the microphone, whereas the DO or digital output depends on the sound intensity and the threshold that has been set. * Voltage: 3.3 to 5 VDC * Outputs: one analogue and one digital output * Fixation: 1 mounting screw hole 3 mm / 1.3" * 2 indicator LEDs: 1 power indicator and 1 comparator output indicator * Frequency response: 50 Hz - 20 KHz * Impedance: 2.2 K Ohm * Sensitivity: 48 - 66 dB * Operating temperature: -40 to +85°C / -40 to 185° F * Dimensions: 44 x 15 x 10 mm / 1.73 x 0.59 x 0.39" * Weight: 4 g / 0.14 oz https://elecena.pl/product/27149337/whadda-wpse309-microphone-sound-sensor-module 2024-11-06 https://elecena.pl/product/27149337/whadda-wpse309-microphone-sound-sensor-module 2025-02-06