3pcs LM393 DC 5V/3.3V Hall Sensing Probe Hall Switch Sensor Module Motor Speed Test For Arduino Magnetic Detect Car

Specifications: Main chip: LM393, 3144 Hall sensor Working voltage: DC 5V Size: 2.7 cm x 1.4cm Interface description (4-wire system): 1 VCC external 5V voltage 2 GND external GND 3 DO small board digital output interface (0 and 1) Features: 1. Has a power indicator and signal output indication. 2. Single signal output. 3. The module has no trigger and the output is low; the module has a trigger and the output is high. 4. Sensitivity is adjustable (fine adjustment). 5. There is a signal output when there is magnetic field cutting. 6. The output of the circuit board can be directly connected to the single-chip microcomputer or our relay module, buzzer module and so on. 7. Can be used for motor speed/position detection and other occasions. Package Included: 3 x Hall Switch Sensor Module