Type: Hall Effect / Reed Switch / MR (Magnetoresistive)
Applications: Position detection, proximity sensing, speed measurement (e.g., RPM)
Voltage Range: 3.3V – 12V (varies by model)
Output: Analog / Digital (switch or PWM)
Interface: GPIO, I²C, or direct signal output
Common ICs: AH49E (analog Hall), A3144 (digital Hall), MLX90373 (MR sensor)
Notes: Non-contact sensing; immune to dust/oil; suitable for harsh environments.
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