KY-015 Digital Temperature & Humidity Sensor Module (DHT11) The KY-015 Sensor Module integrates the DHT11 digital temperature and humidity sensor with required supporting components on a compact PCB, providing a simple and reliable solution for basic environmental monitoring. Designed for use with Arduino, Raspberry Pi, and other microcontroller platforms, this module delivers digital temperature and humidity readings through a single-wire serial interface, making it easy to connect and program for a wide range of projects. Product Overview Combines temperature and humidity sensing in one compact module Uses the DHT11 digital sensor for stable and consistent readings Outputs digital data via single-wire communication Ideal for projects requiring basic environmental monitoring in a small form factor Commonly used in weather stations, home automation, greenhouse monitoring, and IoT applications. Technical Specifications Specification Details Module KY-015 Sensor Type DHT11 – Digital Temperature & Humidity Sensor Output Type Digital (single-wire serial) Operating Voltage 3.3V – 5V Interface VCC, GND, Data (Signal) Humidity Range 20% – 90% RH (±5% accuracy) Temperature Range 0°C – 50°C (±2°C accuracy) Module Size 18mm × 15mm Key Features KY-015 module with integrated DHT11 sensor Digital serial output (single-wire communication) 3.3V – 5V operating voltage 3-pin interface: VCC, GND, Signal Reliable operation with low power consumption Compatible with DHT libraries for Arduino Breadboard-friendly design for rapid prototyping What’s Included 1 × KY-015 Digital Temperature & Humidity Sensor Module (DHT11) Ideal Applications Weather stations and environmental monitoring Greenhouse and indoor climate control IoT and smart home projects Arduino and Raspberry Pi education kits General-purpose sensing applications Usage Notes Compatible with Arduino DHT libraries for quick setup Connect the data pin to a digital I/O pin on Arduino or Raspberry Pi Requires a 5K–10K pull-up resistor on the data line (often built-in) Best suited for periodic readings rather than high-frequency sampling Allow a short delay between readings (approximately 1–2 seconds) for accurate results A compact and easy-to-use module for reliable digital temperature and humidity measurement in microcontroller-based projects.
