The Gravity: DHT22 Temperature & Humidity Sensor (SEN0137) is a high-precision digital sensor designed for reliable environmental monitoring. Featuring a capacitive humidity sensing element and an integrated NTC temperature sensor, it provides calibrated digital output with ±0.5°C temperature accuracy and ±2%RH humidity accuracy.
Ideal for Arduino, Raspberry Pi, and ESP32 platforms, this sensor is compact, low-power, and capable of transmitting signals over distances up to 20 meters, making it perfect for HVAC, meteorology, smart agriculture, medical devices, and IoT applications.
Projects
Project 1: Environmental Monitoring System Based on OBLOQ-IoT Module
This product is mainly applied in electronic laboratory to monitor and control indicators such as temperature, humidity, light and dust, and timely upload them to the cloud data space to achieve remote monitoring and control of dehumidifier, air purifier, exhaust fan and dimmable light, etc. in the laboratory.
Project 2: The Ultimate IoT Sensor Box for Smart Offices and Buildings
Introduction: Improve your flex desk office experience with this innovative IoT sensor box
Key Features
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High accuracy: ±0.5°C temperature, ±2%RH humidity
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Wide temperature range: -40°C to 80°C
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Humidity range: 0–100%RH
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Digital signal output (single-bus communication)
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Gravity-digital interface, supports Arduino and compatible controllers
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Low power consumption: 1.5mA
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Good long-term stability and reliability
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Anti-interference performance and fast response time
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Usable with analog ports as digital signal interface
Applications
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HVAC systems and dehumidifiers
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Smart agriculture and greenhouse monitoring
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Medical equipment and meteorological stations
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IoT devices and weather data collection
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Environmental control systems and smart homes
Specifications
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Model: SEN0137
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Operating Voltage: 5V
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Current Consumption: 1.5mA
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Temperature Range: -40°C to +80°C
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Temperature Accuracy: ±0.5°C
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Temperature Resolution: 0.1°C
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Humidity Range: 0–100%RH
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Humidity Accuracy: ±2%RH
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Humidity Resolution: 0.1%RH
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Interface: Gravity-digital, single-wire output (Digit unibus)
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Wiring: VCC (red), GND (black), Signal (yellow)
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Module Size: 38 × 20mm (1.50 × 0.79 inches)
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Sensor Size: 22 × 32mm
Package Includes
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1 × DHT22 Temperature & Humidity Sensor
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1 × Gravity Analog Sensor Cable