LM393 Voltage Comparator Module

The LM393 Voltage Comparator Module is designed to compare an input voltage with an adjustable reference voltage and generate a digital output signal. It is based on the LM393 dual comparator IC, using one comparator channel while the second remains unused. The onboard potentiometer allows precise adjustment of the trigger threshold within the supply voltage range. Operating from 4.5V to 28V, the module provides stable and reliable voltage detection for signal monitoring and embedded control systems. It is suitable for voltage level detection, sensor interfacing, and automation circuits. Features - LM393 dual voltage comparator IC - Adjustable threshold via onboard potentiometer - Digital output signal for voltage comparison - Wide input voltage range 4.5V–28V - High sensitivity voltage detection - Fast comparator response time - Open collector output configuration - Compact PCB design for embedded projects - Stable operation with low power consumption - Compatible with microcontrollers and logic circuits - Suitable for sensor signal threshold detection - Easy integration in automation and monitoring systems Specifications - Comparator Chip: LM393 Dual Comparator - Input Voltage: 4.5–28V DC - Comparator Channels: 2 (One Used On Module) - Output Type: Digital Output (Open Collector) - Threshold Adjustment: Onboard Potentiometer - Output Logic Level: TTL Compatible - Response Time: Fast Comparator Switching - Operating Current: <20mA - Indicator LED: Power And Output Status - Operating Temperature: -25°C to 85°C - Board Dimensions: ~32mm x 14mm Links - LM393 Voltage Comparator Module Datasheet - LM393 Symbol and Footprint Tutorials What is Analog Comparator | How Analog Comparator Works