Compact Temperature and Humidity WiFi Node Module with DHT11 Sensor for Smart Home Monitoring

This temperature and humidity WiFi node module provides a practical solution for adding environmental monitoring capabilities to smart home and IoT systems. Measuring just 25mm by 21mm with a minimal weight of 3.8g, it offers discreet installation in cabinets, enclosures, or compact electronic projects without requiring extensive modification to existing setups. The module utilises the DHT11 sensor to capture humidity readings across a 20-90% relative humidity range and temperature measurements between 0-50°C, delivering accurate environmental data through WiFi connectivity for remote access and monitoring applications. Its support for DC power inputs from 3.7V to 12V makes it compatible with various power sources, including standard 3.7V lithium battery configurations commonly found in portable electronics.

Features and Construction

Built around the DHT11 temperature and humidity sensor, this compact module combines essential environmental monitoring functions with WiFi connectivity in a space-efficient package. The electronic components are mounted on a printed circuit board that measures 25mm by 21mm, creating a complete monitoring solution that weighs only 3.8g for minimal physical footprint in installation scenarios.

Material and Build

The module utilises standard electronic components including the DHT11 sensor chip mounted on a PCB substrate with supporting circuitry for WiFi connectivity and power regulation. The construction focuses on functional reliability within the specified measurement ranges, providing temperature accuracy of ±1°C and humidity accuracy of ±1% RH according to the DHT11 sensor specifications. The compact PCB design ensures all components are securely mounted while maintaining the small overall dimensions that enable flexible placement in monitoring applications.

Size and Practical Fit

With dimensions of 25mm by 21mm and a weight of just 3.8g, the module offers exceptional flexibility for installation in constrained spaces. This compact size allows mounting inside electronic enclosures, embedding within existing projects, or placement in discreet monitoring locations without dominating available space. The lightweight construction facilitates mounting in sensitive applications where additional weight might be problematic, while still providing complete temperature and humidity monitoring capabilities through its integrated sensor and connectivity components.

Uses and Placement

The temperature and humidity WiFi node module serves multiple applications in both residential and light commercial environments. Its WiFi connectivity enables remote monitoring through compatible smart home platforms, while the compact dimensions allow placement in locations where traditional monitoring equipment might be impractical or visually intrusive.

Event or Professional Use

For professional monitoring applications, the module provides a cost-effective solution for temporary environmental tracking during events, exhibitions, or storage facility monitoring. The flexible DC power input range from 3.7V to 12V supports operation from various power sources including portable battery packs, making it suitable for locations without convenient mains power access. The DHT11 sensor's measurement range of 20-90% RH humidity and 0-50°C temperature covers typical indoor environmental conditions encountered in event spaces, storage areas, and commercial premises.

Everyday Home Use

In residential applications, the module offers homeowners a discreet way to monitor temperature and humidity conditions in specific rooms, cabinets, or storage areas. The WiFi connectivity enables integration with smart home systems for automated responses to environmental changes, such as triggering ventilation systems when humidity levels rise or adjusting heating based on temperature readings. The compact 25mm by 21mm dimensions allow installation in bookcases, media cabinets, or utility rooms without disrupting existing décor or taking up valuable space.

Benefits and Buying Value

This temperature and humidity monitoring module provides practical benefits through its combination of compact design, flexible power options, and essential environmental monitoring capabilities. The inclusion of WiFi connectivity removes the need for complex wiring installations, while the small physical footprint makes it suitable for applications where space is limited or discreet monitoring is preferred.

Reuse and Low Maintenance

The module's design facilitates reuse across different monitoring applications through its standard mounting options and flexible power requirements. With no moving parts and solid-state sensor technology, it requires minimal maintenance beyond occasional cleaning of the sensor area to ensure accurate readings. The wide DC voltage input range from 3.7V to 12V supports operation from various power sources that might be available in different installation scenarios, extending the module's useful lifespan across multiple projects or location changes.

Why Choose This Product

This temperature and humidity WiFi node module offers distinct advantages for smart home enthusiasts and electronic project builders seeking compact environmental monitoring solutions. The combination of precise 25mm by 21mm dimensions with comprehensive monitoring capabilities through the DHT11 sensor provides a practical balance between physical size and functional performance. The inclusion of WiFi connectivity enables remote data access without requiring additional communication modules, while the flexible power input range ensures compatibility with various existing power systems from 3.7V lithium batteries to standard 12V power supplies.