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Two small green circuit boards with silver sensor components and gold pin headers

KEHIPI

KEHIPI 2PCS ENS160+AHT21 Air Quality Sensor development board

SKU CH-QGV2-J2CBZ

Two boards combine ENS160 gas sensing with AHT21 temperature and humidity measurement over I2C

  • Monitors indoor air quality with ENS160 multi-gas sensor
  • Tracks CO2, TVOC and AQI via I2C output
  • Measures temperature from -40 to +120 degrees
  • Reads humidity across 0 to 100 percent RH
  • Operates on 2.0 to 5.5 volt DC supply

Indoor air-quality sensing kit

This pack supplies two ENS160+AHT21 boards that combine a digital multi-gas sensor with a temperature and humidity sensor. Each module detects VOCs such as toluene, hydrogen, ethanol, NO2 and ozone while reporting equivalent CO2, TVOC and an AQI index. The boards operate from 2.0 to 5.5V DC and communicate over I2C for simple integration with Arduino and similar platforms.

Makers building air monitors.

Developers who need a drop-in replacement for the CCS811 will find the wider detection range and dual-sensor layout useful. Projects that require wireless connectivity, onboard data logging or battery management circuitry must add those functions separately because the boards provide only the raw sensor interface.

I2C output with four MOX elements

The ENS160 uses four metal-oxide sensor elements to deliver IAQ data across a 0 to 65535 ppb range, while the AHT21 covers -40 to +120 °C and 0 to 100 % RH. This combined I2C interface is the single specification that determines whether the module fits an existing firmware stack or hardware footprint.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 88% of the 1,420 comparable items (median $44.99).

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Specifications

Product
Brand nameAITRIP

Questions about this item

Should I choose the single board or the 2PCS pack for my air quality project?

The 2PCS pack gives you two identical ENS160+AHT21 boards so you can monitor separate rooms or build redundant nodes without ordering twice.

What do the TVOC and eCO2 numbers actually tell me when the sensor is running in my enclosure?

TVOC reports total volatile organic compounds in ppb up to 65535 and eCO2 estimates carbon-dioxide equivalent from the same MOX elements, both refreshed over I2C.

How does the I2C interface limit the way I wire this sensor to my microcontroller?

The board uses a standard I2C output at 2.0–5.5 V DC, so you share the two-wire bus with other devices and address each sensor individually.

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