Grove – AHT20 I2C Industrial Grade Temperature and Humidity Sensor

The AHT20 is a new generation of temperature and humidity sensor embedded with a dual-row flat and no-lead SMD package, suitable for reflow soldering. It is equipped with a newly designed ASIC chip: an improved MEMS semiconductor capacitive humidity sensor, and a standard on-chip temperature sensor.

The performance of AHT20 is more stable in harsh environments compared with the previous generation of temperature and humidity sensors such as Grove – Temperature & Humidity Sensor Pro (AM2302/DHT22), as a matter of fact, the AHT20 is fittable in most industrial scenarios.

The output is the I2C protocol with the Grove interface.

Features

• Temperature measurement range -40 ~ 85°C, Humidity measurement range 0 ~ 100% RH
• Digital output, Grove I2C interface
• Excellent long-term stability
• SMD package suitable for reflow soldering
• Quick response and strong anti-interference ability
• Compatible with Arduino
• 4-pin interface reserved

Specifications

• Operating Voltage: DC:2.0-5.5V
• Measuring Range (humidity) 0 ~ 100% RH
• Temperature Range: -40 ~ + 85 ℃
• Humidity Accuracy: ± 2% RH (25 ℃)
• Temperature Accuracy ± 0.3 ℃
• Resolution: Temperature: 0.01 ℃, Humidity: 0.024% RH
• Output Interface: Grove I²C Interface
• I2C address: 0x38
• Dimensions: 24x20x12 (mm)
• Product number: Seeed 101990644

Resources

• Product Wiki
• Hardware schematic diagram
• Arduino Library
• I2C Wire Library Overview