Features: AM2305 humidity sensitive capacitors digital temperature and humidity module is a temperature and humidity composite sensors with calibrated digital signal output. Digital module acquisition technology and temperature and humidity sensed technology, high reliability and excellent stability. Adopting capacitive humidity sensitive components and standard digital single bus output. Breathable and dustproof design, effectively protecting the circuit board. Low energy consumption, long transmission distance, automatic calibration. Wide voltages support DC3.3 to 5.5V, fast response and interferences resistant ability. Specifications: Material: PC Plastic Cable Length: approx. 70cm/27.5inch Measurement: Temperature: -40~+ 80℃ humidity: 0... 99.9%RH Accuracy (at 25 ℃ environment): Temperature: ± 0.3℃ Humidity: ± 2%RH (10... 90%RH) Resolution: Temperature: 0.1℃ Humidity: 0.1%RH Attenuation value: Temperature:<1℃/year Humidity:< 1%RH/year Sensors type: High Precised integrated temperature and humidity sensors Working temperature:-40 ... +80℃ Power Supply: DC3.3~5.5V Package Includes: 1 Set AM2305B Temperature Humidity Transmitter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.