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

This WiFi-enabled node module brings reliable temperature and humidity sensing to your IoT projects or smart home setup. It is built around the widely used DHT11 sensor, giving you real-time environmental data over a wireless connection without the need for long sensor cables. The module accepts a broad DC input voltage range from 3.7V to 12V, and it can run directly from a 3.7V lithium battery, making it ideal for portable or remote monitoring stations. With a tiny footprint of just 25mm by 21mm and a weight of only 3.8g, it fits neatly into small enclosures or can be mounted directly where readings are needed most. Whether you are automating greenhouse ventilation, tracking server room conditions, or integrating with a home assistant platform, this node module provides a straightforward sensing solution.

Features and Construction

This module combines a digital temperature and humidity sensor with WiFi connectivity on a compact PCB. Its simple design focuses on reliable data output and easy integration into existing electronics projects.

Sensor and Measurement

The DHT11 sensor measures temperature from 0 to 50°C and relative humidity from 20% to 90% RH. It is a cost-effective choice for basic environmental monitoring, providing digital readings that can be read by microcontrollers and single-board computers.

Power and Voltage Flexibility

Operating voltage spans DC 3.7V to 12V, giving you options from standard USB power banks to larger DC supplies. It also supports direct power from a 3.7V lithium battery for off-grid use.

Size and Weight

At only 25mm by 21mm and 3.8g, the board is small enough for wearable prototypes, sensor nodes, or hidden installations. Its light weight minimises mechanical stress on mounting points.

Uses and Placement

This node module is designed for wireless environmental sensing in a range of indoor or sheltered outdoor applications. Its small size and flexible power options allow creative placement.

Smart Home Integration

Connect the module to home automation platforms to trigger actions based on temperature or humidity thresholds, such as turning on a dehumidifier or adjusting heating schedules.

DIY and Maker Projects

Hobbyists can use the module to add environmental sensing to robot projects, weather stations, or plant monitoring systems. The WiFi connection simplifies data logging and remote viewing.

Portable or Remote Use

When powered by a 3.7V lithium battery, the module can be placed in sheds, greenhouses, or shipping containers to monitor conditions where mains power is not available.

Benefits and Buying Value

This module offers a practical sensing solution without high upfront cost or complex wiring. Its power flexibility and WiFi connectivity reduce installation barriers.

Ease of Integration

With digital output and standard voltage requirements, the module works well with popular development boards. No additional signal conditioning is needed for basic operation.

Low Maintenance

The solid-state DHT11 sensor requires no field calibration under normal use. The compact PCB design means fewer points of failure compared to multi-component setups.

Why Choose This Product

If you need a simple, low-power way to bring temperature and humidity data into your wireless system, this module provides a ready-to-use building block with clear specifications and a well-established sensor.