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Hall sensor module - A3144

Motor / Fan Speed detecting applications, Tachometer, Allegro A3144 + LM393 with sensitivity threshold preset and LED indication

Hall sensor module - A3144

Sunrom Part# 4593

Available We dispatch same day if ordered by 4PM (excluding holidays), then courier usually takes 2-5 days.
Real Time Availability
Ready Stock: 5 nos.
Factory Leadtime for more quantity: 15 days
Quantity Pricing
Quantity :
Price (Discount%)
1-4 :
Rs.180/- (0%)
5-9 :
Rs.175/- (3%)
10-24 :
Rs.167/- (7%)
25-49 :
Rs.162/- (10%)
50-74 :
Rs.158/- (12%)
75-99 :
Rs.153/- (15%)
100-249 :
Rs.148/- (18%)
250-499 :
Rs.144/- (20%)
500-999 :
Rs.140/- (22%)
1000+ :
Rs.135/- (25%)

Detect magnetic items - when approaching, LED turns on.


  • Operating Voltage: +5V DC
  • Digital Output 0V or 5V direct interface to microcontroller with LED indication
  • Sensor: Allegro A3144 Hall effect switch
  • LM393 comparator with theshold preset
  • PCB Size: 32x12mm
  • Detector type: Magnetic Sensing Hall effect
  • Detecting range: 7 mm


  • Tachometer
  • Speed Detecting of fan and motors


  • VCC: to power supply +5V DC
  • GND: to power supply - Ground
  • OUT: signal output digital

Board Schematic 


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