Features: The AHT20 digital temperature humidity sensors module delivers precise measurements with ±0.3°C temperature accuracy and ±2% Relative humidity accuracy Ensuring reliabled data for critical applications through its digital output and serials interfaced and low power consumption for energy efficient, long term use in diverse environments. Featuring a standard serials interfaced, this module supports DC3.3V or 5V operating, offering fast response times of 5-30second for temperature and 8-30second for humidity Ideal for electronics hobbyists, developers, and smart home enthusiasts seeking accurate environmental monitoring solution with easy integration into projects Perfect for real time applications home automation, weather stations, and industrial systems where precise temperature and humidity tracking is essential for optimal performances and control. Specifications: [Component]: PCB, metal [Product size]: 2.1x1.1cm [Product weight]: 8g [Power supply voltages]: 2.2V~5.5V [Rate]: 9600 [Data bits]: 8 bits [Type]:AHT20 / AHT30 [AHT20 measurement temperature and humidity ranges]: -40℃~+85℃, 0~100%Relative humidity [AHT30 measurement temperature and humidity ranges]: -40℃~+120℃, 0~100%Relative humidity [Measurement accuracy]: ±0.3℃ temperature and ±2%Relative humidity [Response time]: temperature response 5~30s, humidity response 8~30s Package Includes: 1PC Temperature and humidity sensoring module 1PC pin header note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution