Comparison page
PIR HC-SR501 vs SHT31
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.
PIR HC-SR501
Projects needing Motion and PIR with a commonly available sensors part.
SHT31
Projects needing High accuracy and I2C with a commonly available sensors part.
Specification Matrix
CategorySensorsSensors
MakerGenericSensirion
CoreNot specifiedNot specified
ClockNot specifiedNot specified
WirelessNot specifiedNot specified
Voltage3.3V3.3V
LibrariesArduino, MicroPythonArduino, MicroPython
Price$0.80 - $3.00$3.00 - $6.00
Known Tradeoffs
PIR HC-SR501
- Breakout boards may use different pin labels or regulator choices
- Clone modules can differ from the original datasheet part
SHT31
- Breakout boards may use different pin labels or regulator choices
- Clone modules can differ from the original datasheet part