Comparison page

MLX90614 vs PIR HC-SR501

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

MLX90614

Projects needing IR temperature and Non-contact with a commonly available sensors part.

PIR HC-SR501

Projects needing Motion and PIR with a commonly available sensors part.

Specification Matrix

DimensionMLX90614 PIR HC-SR501

CategorySensorsSensors

MakerMelexisGeneric

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino, MicroPython

Price$8.00 - $20.00$0.80 - $3.00

Known Tradeoffs

MLX90614

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

PIR HC-SR501

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

MLX90614

Melexis

Infrared temperature sensor used for non-contact temperature measurement projects.

China-madeSensors78% confidence

PIR HC-SR501

Generic

Passive infrared motion sensor module used in smart lighting and occupancy detection projects.

China-madeSensors72% confidence