Differential gas pressure (two ports) that measures the difference in pressure between the two ports. If one port is left open the measurement will be relative to atmospheric value. Bluetooth | USB | Huge Battery Life | Independent Logging EXAMPLE SCIENCE EXPERIMENTS Here are just a few example practical ideas you can achieve by using the Wireless Differential Gas Pressure Sensor. Rate of respiration Yeast fermentation (small scale) Breathing rate (with breathing belt) Depth gauge Production of gases in an enclosed atmosphere Rate of Transpiration Specifications Range ±25kPa Differential Connectivity USB & Bluetooth Product Manual Vist this link: https://docs.data-harvest.co.uk/1151/ Worksheet Download from here https://store.data-harvest.co.uk/wireless-differential-gas-pressure-sensor#res Smart wireless sensors Seriously Smart Wireless Bluetooth Sensors Designed with new and existing customers in mind! A new Smart Wireless range of science sensors that also function as data loggers in their own right using Bluetooth or USB connectivity. The new Bluetooth wireless sensors include a huge battery life and can be mixed & matched with existing SmartQ Sensors & Data Loggers! Works with SmartQ Our wireless sensors can be used in combination with other Smart Wireless Sensors or data loggers in the EasySense range, even more amazingly is that with the addition of a V-Hub sensor link you can continue to enjoy using your existing SmartQ sensors at the same time! The Power of Smart Wireless Our Smart Wireless sensors build on the design of our legendary intelligent SmartQ Sensors but adds Bluetooth wireless connectivity allowing users to connect to tablets and mobile phones using the new EasySense2 Software. Digital TechnologyOur digital sensor technology brings science to the classroom providing you with a robust, accurate and repeatable teaching experience from the start. Auto CalibrationWe have taken the hassle out of setting up your experiments with our pre-calibrated, auto identify sensor technology, every sensor is ready to use out of the box. USB ChargingOur Smart Wireless sensors are powered by an internal battery and can be charged via a standard USB charger. Designed for MobileWith the included Bluetooth connectivity the new Smart Wireless Sensors can connect to Tablets, Mobile Phones, Laptops and Desktop Computers Smart Connectivity Not only do the Smart Wireless Sensors connect to multiple tablets and mobile devices via Bluetooth but they can also connect directly to a desktop computer and be used just like a traditional data logger whilst offering faster data transfer rates.