Features
VOC & Gas Detection:
Monitors volatile organic compounds (toluene, hydrogen, ethanol, NO2, ozone) and calculates eCO2 (equivalent CO2) and TVOC (total volatile organic compounds, 0–65535ppb) for accurate IAQ (Indoor Air Quality) assessment.
Four metal-oxide (MOX) sensor elements enable broad gas detection, with outputs including AQI (Air Quality Index) for intuitive air quality visualization.
Performance & Interface:
Fast preheating (Supports I2C (standard mode) and SPI interfaces for flexible connectivity to microcontrollers (Arduino, Raspberry Pi, etc.).
Operates in 5–95%RH humidity and -40°C to +85°C temperature, with VDD 1.71–1.98V (core) and VDDIO 1.71–3.6V for low-power compatibility.
AHT21 Temperature & Humidity Sensor Features
Precision Sensing:
Measures temperature (-40°C to +120°C) with ±0.3°C typical accuracy (0.01°C resolution) and humidity (0–100%RH) with ±2%RH (25°C) typical accuracy (0.024%RH resolution).
Calibrated digital output via standard I2C protocol, eliminating the need for external signal processing.
Compact & Robust Design:
3x3mm pin-less SMD package (0.8mm height) suitable for reflow soldering, ideal for space-constrained applications.
Improved ASIC and capacitive sensor technology ensures stable performance in harsh environments, surpassing previous-generation reliability.
Technical Specifications
ENS160:
Gas Range: TVOC/eCO2 0–65535ppb, AQI 0–500.
Interface: I2C (100kHz/400kHz), SPI (up to 10MHz).
Power: 1.71–1.98V (core), 1.71–3.6V (IO), AHT21:
Range: Temperature -40°C to +120°C, humidity 0–100%RH (non-condensing).
Interface: I2C (100kHz/400kHz), 7-bit default address (0x38).
Power: 2.0–5.5V DC, Package Includes
1 × ENS160+AHT21 Sensor Module