- Input voltage: 4.5 – 28 V - Overview Universal single-supply comparator module LM393 with precise reference tuning. It provides dual open-collector outputs for load-driven signaling, suitable for front-end detection and microcontroller switching capture. Compatible with wwrme-Sensitive temperature sensor, the light-sensitive sensor, and the vibration sensor. - Key benefits Accurate threshold detection with adjustable reference voltage via a potentiometer. Dual-channel output to drive independent signals from the same sensor or different sensors. Simple single-supply operation from 4.5 to 28 V, easy integration with microcontroller projects. Open-collector outputs require pull-ups, offering flexible interfacing with various logic levels. - How to use 1) Use the potentiometer to generate and set the reference voltage. 2) Connect the sensor voltage to the comparator input and use the resistor network to establish the comparison reference. 3) The module outputs a high or low level on each channel depending on the comparison result (two-channel, load-controlled outputs). - Hole diameter Approximately 3.2 mm - Applications Temperature threshold switch for environmental control using the warmth-sensitive temperature sensor. Light-triggered switch for automatic lighting or brightness-based control using the light sensor. Vibration threshold monitoring for equipment health or fault detection using the vibration sensor.