This highly sensitive sound detector with 2 outputs (1 analog and 1 digital) measures sounds between 48 and 66 dB. The AO or analog output creates a real-time output voltage signal from the microphone, the DO or digital output depends on the sound level and the set sound threshold. Specifications * voltage: 3.3 to 5 VDC * outputs: 1 x analog + 1 x digital * mounting: 1 screw hole (3 mm) * 2 LEDs: 1 power LED + 1 output LED * frequentierespons: 50 Hz - 20 KHz * impedance: 2.2 kΩ * sensitivity: 48 - 66 dB * operating temperature: -40 °C to +85 °C * dimensions: 44 x 15 x 10mm / 1.73 x 0.59 x 0.39" * weight: 4 g / 0.14 oz https://elecena.pl/product/27744935/velleman-microphone-sound-sensor 2025-01-23 https://elecena.pl/product/27744935/velleman-microphone-sound-sensor 2025-04-21 https://elecena.pl/product/27744935/velleman-microphone-sound-sensor 2026-02-23 https://elecena.pl/product/27744935/velleman-microphone-sound-sensor 2026-04-12