1 Senesing Probe 1 LM393 PCB + 2 Female 20 cm Jumper Wire
Operating Voltage: 3.3V ~ 5V
Sensing Probe Dimensions: 60X30mm Panel PCB Dimensions: 30 X 60mm

Sound Sensor Module Sound Detection Module Main Chip: Lm393, Electret Microphone
Working Voltage: Dc 4 ~ 6v Has The Signal Output Instructions Single Signal Output.
Effective Signal Output For Low Level. Output Low Level And Signal Light Will On When There Has Voice.