LM393 universal single supply comparator module enables precision voltage linear tunability. It provides high and low level dual-channel output with load driving capability. Suitable for front-end signal acquisition and switching control in microcontroller applications. Compatible with NTC temperature sensors, photoresistors, and vibration sensors. Operation: Adjust reference voltage using the onboard potentiometer. Compare the sensor voltage (via resistor divider) with the reference voltage to generate a digital high/low output signal. Specifications: - Input Voltage: 4.5 - 28V - Hole Diameter: approx. 3.2mm - Comparator Chip: LM393 - Pinout: G: Power Ground D: High/Low Output V: Positive Power Out: Load Positive IN: Input Voltage Port - Color: Green - Material: PCB - Dimensions: 39.5 x 17mm Package Includes: 3 x LM393 Voltage Comparator Module Note: The package includes only the items listed above. Other accessories are not included. Due to lighting and display differences, actual product color may vary slightly from images. Measurement tolerance: +/- 1-3cm.