Efficient and Accurate Measurement for Heating Engineers The Testo Smart Probes Differential Temperature/Pressure Kit is designed specifically for heating engineers, providing a compact and comprehensive solution for essential measuring tasks in heating systems. This kit includes three high-quality measuring instruments: two Testo 115i clamp thermometers and one Testo 510i differential pressure measuring instrument. Paired with the Testo Smart App, these tools offer precise and efficient temperature and pressure measurements. Key Features Comprehensive Kit: Includes 2x Testo 115i surface thermometers and 1x Testo 510i differential pressure measuring instrument. Smart App Integration: Connects to the Testo Sm