DHT11 WiFi Temperature and Humidity Node Module for Remote Environmental Monitoring

This compact Node Module provides a streamlined method for wireless environmental sensing by integrating a DHT11 temperature and humidity sensor with WiFi connectivity. Designed for scenarios requiring remote data access, it allows users to monitor conditions in spaces like grow tents, server cabinets, or storage areas from a phone or computer. The module's primary value lies in delivering specific, measurable data – humidity between 20% and 90% RH and temperature from 0°C to 50°C – directly to a user over a network. Its operational flexibility is enhanced by a broad input voltage range, accommodating standard DC power supplies or a single 3.7V lithium battery, making it suitable for both permanent installations and temporary, portable setups where mains power is unavailable.

Features and Construction

This module combines essential sensing and communication functions into a single, minimalistic unit. The focus is on delivering core performance within defined parameters, avoiding unnecessary complexity for straightforward monitoring tasks.

Material and Build

The product is built around a standard electronic circuit board that hosts the DHT11 sensor and the necessary WiFi communication components. The construction prioritises functional integration over elaborate casing, resulting in the notably low total weight of 3.8 grams. This lightweight build is a direct consequence of its focused component selection and absence of bulky enclosures, making it easy to mount in tight spaces or attach to other objects without adding significant mass.

Size and Practical Fit

With dimensions of only 25mm by 21mm, the module has an exceptionally small footprint. This size allows for installation in confined locations where larger monitoring equipment would not fit, such as inside electronic enclosures, behind panels, or within small terrariums. The compact form factor is a key differentiator, enabling discreet environmental sensing without occupying valuable workspace or altering the aesthetics of a room.

Uses and Placement

The module's application is centred on providing data for informed decision-making in both casual and more systematic monitoring contexts. Its WiFi capability removes the need for physical checks, saving time and allowing for alerts based on data thresholds.

Event or Professional Use

In professional or dedicated hobbyist settings, such as monitoring server room environments, plant cultivation areas, or sensitive storage facilities, this module offers a cost-effective sensing node. The defined measurement ranges (20-90% RH, 0-50°C) cover typical indoor environmental conditions, providing actionable data to prevent issues like mould growth from high humidity or equipment stress from temperature extremes. The ability to log this data remotely supports maintenance schedules and early problem detection.

Everyday Home Use

For general home use, it can serve as a smart sensor for rooms like basements, garages, or attics to monitor for dampness or freezing risks. Parents might use it to check conditions in a nursery, while plant enthusiasts can monitor a greenhouse or indoor garden. The support for battery power via a 3.7V lithium cell makes it easy to place in areas without convenient power sockets, such as a garden shed or a holiday home, enabling periodic checks on property conditions remotely.

Benefits and Buying Value

The value of this module stems from its specific function, reliable operating parameters, and physical practicality. It addresses the need for accessible, networked environmental data without overcomplication.

Reuse and Low Maintenance

As a solid-state electronic device with no moving parts, it requires minimal ongoing maintenance beyond ensuring a stable power source and WiFi connection. Its durability is inherent to its component-based construction. The module can be redeployed for different monitoring projects over time, for instance, moving from monitoring a reptile tank to a wine cellar, offering long-term utility from a single purchase.

Why Choose This Product

This product is chosen for its clear specification match: if your need is for a compact, WiFi-enabled sensor that measures temperature and humidity within the 0-50°C and 20-90% RH ranges, this module directly meets that requirement. The explicitly stated support for 3.7V battery power is a distinct advantage for portable applications. It provides a focused solution without extra, unsupported features, ensuring you pay for and utilise only the capabilities explicitly described in its specifications.