DHT22 Digital Temperature and Humidity Sensors AM2302 Module With Cable For Arduino – KSH 500 at HIMA TRONICS Mombasa – Top quality sensors. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices.
Home / Sensors / DHT22 Digital Temperature and Humidity Sensors AM2302 Module With Cable For Arduino

DHT22 Digital Temperature and Humidity Sensors AM2302 Module With Cable For Arduino

SKU: HMJ742 Category: Sensors
KSH 500.00
In Stock
Inquire
Product Description

DHT22 Digital Temperature and Humidity Sensor Module (AM2302)

= High-Precision Environmental Sensor with Cable for Arduino =

The DHT22 (also known as the AM2302) is a highquality digital temperature and humidity sensor offering better accuracy and a wider measurement range than its popular counterpart, the DHT11 . This module comes with a convenient PCB and cable, making it a plugand-play solution for Arduino projects that require reliable environmental monitoring.

Superior Accuracy Temperature accuracy of ±0.5°C and humidity accuracy of ±2% RH for professionalgrade readings.
Wide Measurement Range Covers 40°C to +80°C and 0-100% RH, suitable for extreme environments .
Operating Voltage: 3.0V to 5.5V DC .
Interface: Single-wire digital signal output .
The sensor uses a 1-wire protocol with only one data pin, simplifying wiring and coding .

= Technical Specifications =

ParameterValue
----
Temperature Range-40°C to +80°C
Temperature Accuracy±0.5°C
Humidity Range0% to 100% RH
Humidity Accuracy±2% to 5% RH (typically ±2%)
Resolution0.1°C / 0.1% RH
Sampling Rate0.5 Hz (one reading every 2 seconds)
Cable LengthTypically 23cm with 3 wires (VCC, DATA, GND)

= Key Features =

+High Precision & Stability Features a calibrated capacitive humidity sensor and thermistor with longterm stability .

+SingleBus Digital Output The data pin sends a calibrated digital signal, eliminating the need for analog input pins .

+Low Power Consumption Ideal for batterypowered IoT applications, drawing only about 2.5mA during conversion .

+Easy Integration The module format makes wiring simple, and the onboard PCB often integrates the required pull-up resistor .

== Applications ==

  1. Weather stations and environmental data logging .
  2. HVAC system control and monitoring .
  3. Smart home automation and greenhouse projects.
  4. Industrial and agricultural temperature/humidity sensing.
ProfessionalGrade Upgrade A significant step up from the DHT11, making it ideal for serious projects.
BeginnerFriendly Uses the same simple interface and library as the DHT11.

√ Compatible with Arduino, ESP32, and Raspberry Pi .

√ Standard 3-wire cable for simple connection (Red=5V, Yellow=Data, Black=GND) .

√ Wide voltage range supports both 3.3V and 5V logic.

= Connection and Usage Tips =

Connecting the module is straightforward:

  • Red Wire: Connect to 5V on the Arduino.
  • Yellow Wire: Connect to a digital pin (e.g., Pin 2).
  • Black Wire: Connect to GND.

No external pull-up resistor is required if the module's PCB includes one, which is typical for these modules .

Use the DHT sensor library from the Arduino Library Manager for easy code implementation .
Because the sensor is slow, ensure you wait at least 2 seconds between requesting data for best results .