Wireless industrial temperature and motion sensor. Based on RuuviTag wireless technology, trusted by over 5000 business customers. Supports a range from -40 to 85 °C. Absolute temperature measurement accuracy ±0.1 °C. 0.01 °C resolution. Firmware and hardware are fully open source. Temperature, humidity and acceleration. Laboratory tested and certified for IP67, IP68 and IP69K. RuuviTag Pro is a robust IP-certified environmental sensor for monitoring temperature, humidity, air pressure and acceleration. The Pro is based on the successful concept of RuuviTag and also offers some outstanding features. RuuviTag Pro is the most robust open source sensor on the market. The IP68 and IP69K certified RuuviTag Pro (2in1) offers comprehensive protection against water with its fully sealed housing. It has been laboratory tested to function for 24 hours in water depths of up to 50 metres and to withstand high-pressure sprays of 80°C water. RuuviTag Pro has an extremely accurate temperature sensor on board. The sensor is designed to fulfil the requirements of ASTM E1112 and ISO 80601 for electronic patient thermometers. The measurement resolution is 0.01 °C, while the absolute accuracy of ±0.1 °C over the temperature range of -20 to 50 °C is astonishing, without the need for calibration. The sensor units are 100% tested on a production setup that is NIST traceable and verified with equipment calibrated to ISO/IEC 17025 accredited standards.