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3V output voltage or turned off completely
It also has better resistance to vibration and mechanical shock and better moisture-proof performance
Input 5V - Output 12V 0
AUX Audio Cable 3
Sound Detection Sensor (KY-038) ESP8266 WiFi 4 Relay Module (5V) 3V output voltage or turnedThe sound detection sensor module detects the intensity of sound where the sound is detected via a microphone and fed into an LM393 op amp. It comprises an onboard potentiometer to adjust the setpoint for sound level. Features: Operating Voltage: 3. 3V to 5V DC LM393 comparator with threshold preset PCB Size: 3. 4cm * 1. 6cm Induction distance: 0. 5 Meter Operating current: 4~5 mA Microphone Sensitivity (1kHz): 52 to 48 dB Easy to use with
US$ 25.20
US$ 20.00
US$ 3725.00
US$ 191.80
