Temperature and Humidity WiFi Node Module with DHT11 Sensor for Wireless Environmental Monitoring

This compact WiFi node module integrates a DHT11 temperature and humidity sensor to provide wireless environmental monitoring capabilities for various applications. Designed for IoT projects, home automation systems, and commercial monitoring needs, it transmits climate data directly to your network without complex wiring installations. The module's flexible power requirements from 3.7V to 12V DC make it suitable for both mains-powered and battery-operated deployments, while its small 25mm × 21mm footprint allows discreet placement in spaces where climate conditions need tracking.

Features and Construction

The module combines sensing capability with wireless connectivity in a single compact unit, designed for straightforward integration into monitoring systems. Its construction focuses on reliable environmental data collection and transmission with minimal power requirements.

Material and Build

Built around electronic components mounted on a PCB, the module incorporates the DHT11 sensor chip alongside WiFi circuitry for data transmission. This construction provides the necessary environmental sensing functionality while maintaining compatibility with standard IoT protocols. The electronic design supports the specified voltage range and measurement capabilities without requiring additional signal conditioning components.

Size and Practical Fit

With dimensions of 25mm × 21mm and weighing just 3.8g, this node module fits into compact spaces where environmental monitoring is needed but space is limited. Its small size makes it suitable for integration into existing enclosures, mounting behind panels, or placement in tight corners where larger monitoring equipment would not fit. The light weight allows mounting with minimal support structures.

Uses and Placement

The module serves both specialised monitoring applications and general environmental tracking needs across different settings. Its wireless capability removes installation barriers associated with wired sensors.

Event or Professional Use

In professional settings, this module can monitor climate conditions in server rooms, laboratories, storage facilities, or manufacturing areas where temperature and humidity control is critical. The ability to operate from a 3.7V lithium battery makes it suitable for temporary monitoring during events, exhibitions, or transportation of sensitive goods. WiFi connectivity allows centralised data collection without running additional cables.

Everyday Home Use

For residential applications, the module can track conditions in greenhouses, terrariums, wine cellars, or hobby rooms where climate stability matters. Home automation systems can use the data to control humidifiers, dehumidifiers, or ventilation systems automatically. The compact size permits discreet placement on bookshelves, inside cabinets, or other household locations without becoming visually intrusive.

Benefits and Buying Value

This module offers practical advantages through its combination of sensing, connectivity, and power flexibility in a single compact unit.

Reuse and Low Maintenance

The module's design supports repeated redeployment to different monitoring locations as needs change. With no moving parts and solid-state electronic construction, maintenance requirements are minimal beyond occasional cleaning of the sensor area. The wide voltage compatibility means it can work with various power sources already available in different environments.

Why Choose This Product

This temperature and humidity WiFi node module provides integrated wireless environmental monitoring without requiring separate sensor and transmitter components. The specified DHT11 sensor offers defined measurement ranges of 20-90% RH and 0-50°C, while the 3.7V-12V power range accommodates both battery and mains-powered operation. Its compact 25mm × 21mm size makes it suitable for installations where space is constrained but climate monitoring is necessary.