Description
The DHT11 Temperature and Humidity Sensor Module without LED [Non-Original] is a stripped-down, cost-optimized version of the familiar DHT11 sensor board. It provides basic ambient temperature and relative humidity measurement over a simple single-wire digital interface, but omits the onboard LED indicator found on some variants — reducing cost and power consumption for volume projects where visual feedback is unnecessary.
The module combines a resistive humidity sensing element with an NTC temperature measurement component and an integrated 8-bit microcontroller. It includes an onboard pull-up resistor and a 3-pin connector, making it ready for direct connection to Arduino and other microcontrollers. The Non-Original designation indicates this is a third-party manufactured variant, offering the same basic functionality and pinout as the original ASAIR DHT11 at a lower price point.
The DHT11 (Non-Original, no LED) provides humidity measurements from 20% to 90% RH with ±5% RH accuracy, and temperature measurements from 0°C to 50°C with ±2°C accuracy. The sensor operates from 3.3V to 5.5V DC, drawing approximately 1mA during measurement and 60µA in standby.
Important Note: This is a basic, cost-sensitive sensor with limitations that should be understood before use. The Non-Original variant may exhibit greater unit-to-unit variation and long-term drift than the original ASAIR DHT11. Its 1°C/1%RH resolution and ±2°C/±5%RH accuracy make it unsuitable for precision applications. The sampling rate is limited to once every 1–2 seconds. The resistive humidity element can drift over long-term exposure to extreme humidity or contaminants. The absence of an LED means no visual status feedback — you must rely on serial output for troubleshooting. For higher accuracy or wider measurement ranges, consider the DHT22 (AM2302) or a digital sensor like the SHT series. The sensor is not waterproof and should be kept dry.
Whether you are building a simple weather station, a humidity controller, or an educational project, the DHT11 (Non-Original, no LED) provides a reliable, affordable entry point for basic digital environmental sensing in cost-sensitive volume applications.
Features
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Non-original DHT11 sensor — Cost-effective third-party alternative to the original ASAIR chip
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No LED indicator — Lower cost and power consumption for volume projects where visual feedback is unnecessary
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Single-wire interface — Requires only one data pin plus power and ground
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Onboard pull-up resistor — Ready for direct connection without external components
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Combined temperature and humidity sensing — Resistive humidity element and NTC temperature component
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3.3V to 5.5V operation — Compatible with Arduino, ESP32, and other microcontrollers
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Low power consumption — ~1mA measuring, ~60µA standby
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3-pin connector — Easy plug-in connection with jumper wires or DuPont cable
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Wide application range — Weather stations, HVAC, dehumidifiers, data loggers, education
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Cost-effective — Affordable solution for basic environmental sensing in volume projects
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Sensor Model | DHT11 (Non-Original) |
| 2 | Humidity Range / Accuracy | 20–90% RH / ±5% RH |
| 3 | Temperature Range / Accuracy | 0–50°C / ±2°C |
| 4 | Resolution | 1% RH / 1°C |
| 5 | Operating Voltage | 3.3V – 5.5V DC |
| 6 | Communication Interface | Single-wire digital |
| 7 | Sampling Period | ≥ 2 seconds |
| 8 | Pin Count | 3 pins (VCC, DATA, GND) |
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