Comparison page

DHT11 vs MH-Z19B

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.

DHT11

Projects needing Temperature and Humidity with a commonly available sensors part.

MH-Z19B

Projects needing CO2 and NDIR with a commonly available sensors part.

Specification Matrix

DimensionDHT11 MH-Z19B

CategorySensorsSensors

MakerAosongWinsen

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduino, MicroPythonArduino

Price$0.40 - $1.00$15.00 - $30.00

Known Tradeoffs

DHT11

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

MH-Z19B

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

Open Individual Model Pages

DHT11

Aosong

Low-cost digital temperature and humidity sensor module used in beginner Arduino projects.

China-madeSensors78% confidence

MH-Z19B

Winsen

NDIR CO2 sensor module commonly used in indoor air quality projects.

China-madeSensors80% confidence