Description
ENS160 + AHT21 Precision Air Quality & Environmental Sensor Module Product Description The ENS160 + AHT21 Sensor Module is a high-performance, all-in-one environmental sensing solution perfect for smart home automation, weather stations, and air purification systems. This compact breakout board combines ScioSense’s advanced ENS160 digital multi-gas sensor with the highly accurate AHT21 temperature and humidity sensor. Operating over a convenient I 2 C communication protocol, it enables your microcontrollers to read real-time ambient temperature, relative humidity, Total Volatile Organic Compounds (TVOC), and equivalent CO 2 (eCO 2 ) levels through a single, tiny footprint. Comprehensive 4-in-1 Monitoring: Delivers precise real-time data for Temperature, Relative Humidity, TVOC (0 to 65,000 ppb), and eCO 2 (400 to 65,000 ppm). True Digital Output: Features an onboard algorithm that automatically outputs calculated Air Quality Index (AQI) values from 1 to 5, simplifying code implementation. Built-in Compensation: The integrated AHT21 sensor provides automatic temperature and humidity compensation to ensure the ENS160 gas readings remain highly accurate regardless of changing weather. Low Power Consumption: Highly power-efficient design with multiple operational modes, making it ideal for battery-operated or continuous-monitoring IoT applications. Compatibility Guide This module is a standard 3.3V/5V compatible sensor that communicates via I 2 C (SDA/SCL lines) and can be easily interfaced with most development architectures. Device Category Compatible Microcontrollers & Ecosystems Arduino Ecosystem Arduino UNO, Nano, Mega, Pro Mini, and newer 32-bit Arduino boards (supported via widely available Adafruit or custom GitHub libraries). ESP & IoT Boards ESP8266 (NodeMCU, Wemos D1 Mini) and ESP32 series—fully compatible with ESPHome and Tasmota firmware for Home Assistant. Raspberry Pi & Single Board Computers Raspberry Pi 3, 4, 5, and Pi Zero (utilizing Python-based I 2 C scripts). Other Microcontrollers STM32 development boards, MSP430, and Teensy controllers. 💡 Wiring & Connection Note: Pinout Layout: The board exposes standard pins: VIN (Power 3.3V – 5V), 3V3, GND, SCL (I 2 C Clock), SDA (I 2 C Data), ADD (I 2 C Address Selection), CS, and INT (Interrupt output). Drop-In Replacement: This module serves as an excellent, modern upgrade to older, obsolete air quality sensors like the CCS811.
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