AM2302 Digital Temperature and Humidity Sensor Module The AM2302 is a compact, pre-calibrated digital temperature and humidity sensor module that delivers reliable, high-accuracy measurements and easy system integration for a wide range of applications. Key benefits - Accurate, ready-to-use readings: Each sensor is calibrated in a precise humidity calibration chamber and stores calibration coefficients in the onboard microcontroller for consistent, out-of-the-box accuracy. - Fast response and robust operation: A capacitive humidity sensing element plus a high-precision temperature element and an 8-bit microcontroller provide quick response, strong anti-interference performance, and long-term stability. - Simple integration: Standard digital bi-directional single-bus output and a 3-pin connection make wiring and software integration straightforward for embedded systems and controllers. - Low power and compact size: Ultra-low power consumption and a small form factor suit battery-powered devices and space-constrained installations. - Reliable transmission: Signal transmission range up to 20 meters or more supports flexible placement in many system layouts. How this product solves problems - Eliminates costly calibration steps by delivering factory-calibrated sensors with coefficients stored on the sensor. - Minimizes false readings and noise in electrically noisy environments thanks to built-in anti-interference design. - Simplifies hardware and firmware design with a single-bus digital interface and bi-directional communication. - Reduces power budget for continuous monitoring applications through low power operation. Key features and specifications - Model: AM2302. - Sensing technologies: Capacitive humidity sensing element and high-precision temperature measurement element. - Onboard processing: High-performance 8-bit microcontroller with stored calibration coefficients and signal processing. - Output: Digital bi-directional single-bus interface. - Connection: 3-pin single-bus wiring for easy connection. - Power: 5 V supply. - Size: 40 x 23 mm. - Weight: 4 g. - Temperature range: -40 to 80 degrees Celsius, accuracy plus or minus 0.5 degrees Celsius. - Humidity range: 20 to 90 percent RH, accuracy plus or minus 2 percent RH. - Signal transmission distance: Up to 20 meters or more depending on wiring and environment. - Platform: Single-chip architecture for compact, integrated performance. - Additional attributes: Ultra-low energy consumption, automatic calibration, fully interchangeable module design, and excellent long-term stability. Typical applications - HVAC and environmental control systems for monitoring and maintaining indoor climate conditions. - Data loggers, weather stations, and test equipment that require stable, accurate humidity and temperature readings. - Consumer electronics, household appliances, automotive control systems, and industrial automation where compact, low-power environmental sensing is needed. Installation and compatibility notes - Uses a standard single-bus digital interface for straightforward integration with microcontrollers and data acquisition systems. - Compact 3-pin module simplifies mounting and wiring in tight spaces. - Special packaging can be provided to meet user requirements. The AM2302 offers precise, factory-calibrated temperature and humidity sensing in a compact, low-power module suitable for a wide range of control and monitoring applications.