A3144 Hall Effect Sensor Module

When a magnetic field is present, the A3144 Hall Effect Sensor Magnet Detector Switch for Arduino will turn on or off. The signal line of the sensor is HIGH (3.5 V) in the absence of a magnetic field. When the sensor is exposed to a magnetic field, the signal line becomes LOW and the LED on the sensor illuminates simultaneously. The existence of a magnetic field will also be shown via an onboard LED.

Pin Attachment
Attach the ground (-) to GND and the powerline (middle) to +5V. Attach signal (s) to any Arduino digital pin.

Features:

• Hall-effect sensor with digital output.
• Usually, the operating voltage is 5V.
• A 25 mA output current.
• It is capable of detecting a magnet’s two poles.
• The operating voltage and the output voltage are the same.
• -40°C to 85°C is the operating temperature range.
• Each turn-on and turn-off time is two microseconds.
• protection against reverse polarity built in.
• Ideal for Use in Industrial and Automotive Applications.