Clean, good waveform driving ability, more than 15mA. Working voltage 3.3V-5 Output format: digital switching output (0 and 1) A fixed bolt holes for easy installation
Main chip: LM393 Working voltage: for DC 5V Single-channel signal output Low-level output signal used for human body touch sensor alarm Adjustable sensitivity Pin Connector to board: 4 Pins
Operating Voltage: 3.3V-5V Features wide range voltage comparator LM393 Adjustable sensitivity Signal output indicator with the retaining bolt hole, convenient installation Output form digital switch output (0 and 1 high and low level) The output effective signal is low level When there is sound, outputs low level and the signal light
Power supply: 3 – 5V Good sensitivity The output format: Digital switching output (0 and 1) The comparator output signal is clean, good waveform, driving ability, more than 15mA. A fixed bolt holes for easy installation. Using a wide voltage LM393 comparator.