Product Description:

YJJ DHT22 AM2302 Module Digital Temperature And Humidity Sensor Supports Single Bus And I2C Communication For Smart Home Applications

Features:

Product Positioning

AM2320 is a digital temperature and humidity combined sensor based on the improved single bus protocol. It is developed and produced by Guangzhou Aosong Electronics. As an upgraded version of DHT22, it maintains a similar appearance and interface while optimizing the communication protocol and response speed, significantly enhancing the communication reliability in complex electromagnetic environments.

2. Key Features

High-performance measurement with excellent cost-effectiveness

Humidity measurement: Range of 0 - 99.9% RH, typical accuracy of ±2%

Temperature measurement: within the range of -40 to 80℃, with a typical accuracy of ±0.5℃

Quick response: Temperature 3 seconds, Humidity 5 seconds (τ63%)

Enhanced Single-Bus Interface

Compatible with DHT series physical interfaces

Using an 800 μs wake-up pulse combined with a 40-bit data frame structure

Built-in CRC check, communication success rate > 99.9%

Industrial-grade reliability

Operating temperature: -40 to 80℃ wide temperature range

Moisture-proof probe design (based on IP30 protection standard)

Long-term stability: < 1% RH/year drift

3. Typical Applications

Industrial Automation

Workshop Environmental Monitoring System

Power equipment temperature and humidity warning

Warehouse Logistics Environment Record

Smart Home

Intelligent air conditioning linkage control

Environmental perception of the fresh air system

Core sensor of high-end dehumidifier

Smart Agriculture

Greenhouse and Environment Monitoring

Grain storage monitoring

Aquaculture water quality management

1. It can measure the humidity and temperature of the surrounding environment

The sensor uses AM2320 and supports both single bus and I2C communication.

3. Humidity measurement range: 0% - 99.9% (within the temperature range of 40°C - 80°C) Humidity measurement error: +/- 3%

4. Temperature measurement range: -40°C to 80°C. Temperature measurement error: ±0.5°C

4 Working voltage: 3.1V - 5.5V

5 Output Format Digital Output

6. It is equipped with fixed bolt holes, facilitating installation.

Module Interface Description (4-wire System)

1 VCC: External 3.1V - 5.5V

2 SDA Serial data, bidirectional interface

3 GND External GND

4 SCL Serial Clock, Input Port (Grounded on single bus)

Specifications: