HTU21D Temperature & Humidity Sensor Module – SMD 5V
HTU21D Temperature & Humidity Sensor Module – SMD 5V
HTU21D Temperature & Humidity Sensor Module
The HTU21D Temperature and Humidity Sensor Module is a compact, high-accuracy SMD sensor designed for a wide range of electronics and computing projects. Whether you're building a weather station, a smart home device, or an industrial monitoring system, this module delivers reliable, real-time environmental data with minimal power consumption.
Key Features
- High Accuracy Sensing: Precisely measures both temperature and relative humidity for dependable environmental monitoring.
- Wide Operating Range: Functions across temperatures from -40°C to +105°C, making it suitable for demanding environments.
- Low Supply Voltage: Operates at 1.5V to 3.6V, ideal for battery-powered and low-energy projects.
- SMD Package: Surface-mount design for easy integration into custom PCBs and breadboard-compatible carrier boards.
- 5V Dissipation Power: Compatible with standard microcontroller setups including Arduino, Raspberry Pi, and similar platforms.
- No High-Concern Chemicals: Safe and compliant — contains none of the restricted high-concern substances.
- Customizable Integration: Supports custom project configurations and flexible wiring options.
- Compact & Lightweight: Small form factor fits tight enclosures and embedded designs without compromise.
Specifications
| Sensor Type | HTU21D Temperature & Humidity |
| Supply Voltage | 1.5V – 3.6V |
| Dissipation Power | 5V |
| Operating Temperature | -40°C to +105°C |
| Package Type | SMD |
| Quantity | 1 piece |
| Condition | New |
| Application | Computer / Microcontroller Projects |
What Can You Use It For?
This sensor module is perfect for hobbyists, engineers, and students who need accurate environmental data in their projects:
- DIY weather stations and climate monitors
- Smart home automation systems
- Arduino and Raspberry Pi sensor projects
- Industrial and laboratory environmental monitoring
- HVAC control systems
- Data loggers and IoT applications
Made in Mainland China.
Looking for other electronics and DIY tools? Check out the Electromagnetic Induction Tester – Coil & Circuit Fault Detector or the Air Compressor Pressure Gauge – DIY Tool for more project essentials.
Learn more: OSHA on eye and face protection
Frequently Asked Questions
Q: What microcontrollers are compatible with the HTU21D Temperature and Humidity Sensor Module?
A: The HTU21D sensor module is compatible with a wide range of popular microcontrollers including Arduino (Uno, Nano, Mega), Raspberry Pi, ESP8266, ESP32, and other platforms that support I²C communication. Its low supply voltage of 1.5V–3.6V makes it versatile for both 3.3V and 5V systems (with an appropriate voltage regulator if needed).
Q: How accurate is the HTU21D sensor module for temperature and humidity readings?
A: The HTU21D is known for its high measurement accuracy, offering typical accuracy of ±0.3°C for temperature and ±2% RH for relative humidity. This makes it well-suited for applications requiring precise environmental monitoring, such as weather stations, smart home devices, and laboratory setups.
Q: Does this HTU21D module come ready to use, or does it require additional components?
A: The module comes as a single SMD-packaged unit. For most breadboard or development board projects, you may need a carrier board or adapter. It communicates via the standard I²C protocol, so you'll need just a couple of data lines (SDA and SCL) plus power and ground connections to get started.