Hall Sensor Module LM393 Linear Hall Effect

The Hall Sensor Module LM393 is a linear Hall effect sensor board that detects magnetic fields and gives both an analog and a digital output. The linear Hall sensor produces a voltage that changes with the strength and polarity of a nearby magnet, and the LM393 comparator turns it into a clean on/off signal at a threshold you set with the on-board potentiometer. It works directly with Arduino, ESP32 and other microcontrollers.

Hall Sensor Module LM393 Specifications

• Sensor: linear Hall effect sensor
• Comparator: LM393
• Outputs: analog (AO) and digital (DO)
• Threshold: adjustable with the on-board potentiometer
• Supply voltage: 3.3–5 V DC

Hall Sensor Module LM393 Applications

• Detecting whether a door, lid or drawer with a magnet is open or closed
• Counting RPM with a magnet on a wheel or shaft
• Measuring and comparing magnetic field strength in experiments
• Contactless limit switches and position sensing
• Electronics classes and sensor kits

What's in the Box

• 1 × Hall sensor module with LM393

Tip: With no magnet nearby, the analog output sits near the middle of its range and moves up or down depending on which pole faces the sensor, so read AO with analogRead to see the field. Use DO for simple detection and turn the potentiometer to set how strong the field must be to switch it.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.