Description Boardoza TH09C Temperature and Humidity Sensor is a compact digital environmental sensor breakout board for measuring temperature and relative humidity in embedded projects. Built around the TH09C sensor, it is suitable for HVAC monitoring, weather stations, indoor environment sensing, data loggers, and low-power IoT devices. The board operates from 2V to 5.5V and communicates through a TTL I2C interface. With high temperature accuracy, typical humidity accuracy of ±2.0%RH, and a compact 20mm x 20mm board format, it is easy to integrate into microcontroller-based monitoring systems. Features Digital temperature and humidity sensing: provides temperature and relative humidity readings through an I2C interface. High accuracy: official documentation lists ±0.15°C temperature accuracy and typical ±2.0%RH humidity accuracy. Wide measurement range: supports -40°C to +100°C temperature measurement and 0% to 100% RH humidity operation. Flexible input voltage: operates from 2V to 5.5V for compatibility with many embedded platforms. Low power consumption: suitable for battery-operated environmental sensing devices. Compact breakout board: 20mm x 20mm board size for small prototypes and space-constrained builds. Specifications Product Boardoza TH09C Temperature and Humidity Sensor Sensor TH09C Function Temperature and humidity sensing Input Voltage 2V - 5.5V Voltage Input Type Molex 4-pin 2.50mm header Interface I2C Temperature Accuracy ±0.15°C Humidity Accuracy Typical ±2.0% RH Measurement Range -40°C to +100°C Operating Humidity 0% to 100% RH Operating Temperature -40°C to +100°C Board Dimensions 20mm x 20mm Shipping Weight 20g Dimensions Applications HVAC temperature and humidity monitoring systems. Weather station and indoor environment sensing projects. IoT sensor nodes and battery-powered environmental data loggers. Smart home, greenhouse, and storage condition monitoring. Educational experiments and microcontroller sensor development. Product List 1 Boardoza TH09C Temperature and Humidity Sensor Other Content Pinout: J1 provides VCC, SCL, SDA, and GND. Interface note: the board uses a TTL I2C interface for digital temperature and humidity data. Power note: the official documentation lists 2V to 5.5V input voltage. Mechanical note: the official repository provides a STEP file for enclosure and mounting reference. Resources Official GitHub Repository Boardoza TH09C Datasheet Boardoza TH09C STEP File FAQ What is the Boardoza TH09C Temperature and Humidity Sensor used for? It is used for digital temperature and humidity monitoring in HVAC, weather station, IoT, smart home, and environmental sensing projects. Which communication interface does it use? The board uses an I2C interface. What input voltage does it support? The official documentation lists 2V to 5.5V input voltage. What accuracy is listed by the official documentation? The official documentation lists ±0.15°C temperature accuracy and typical ±2.0% RH humidity accuracy. What is the board size? The official board dimensions are 20mm x 20mm.
