• Measures temperature of pipes in heating and cooling systems
• Use with testo 549i Refrigeration Pressure Probe to calculate superheat and sub-cooling
• Quickly identify temperature changes by monitoring realtime trending and data logging
• 115i NTC temperature sensor is more accurate and stable than thermocouples
• Measurement data is transmitted to the convenient and powerful testo Smart Probes App in your smart device
• Tough, accurate, and easy-to-use
• For all HVAC/R technicians and contractors

The testo 115i Smart Probe is a pipe-clamp probe that measures temperature in pipes more accurately than thermocouples because of the superior NTC temperature sensor technology. The exclusive Testo probe design grips pipes up to 1.5" and maintains critical contact between probe and pipe surface to derive the best readings. Users can read the measurements using the testo Smart Probes App installed on their smart device. The testo 115i works on smart devices with either Android or Apple operating systems at distances up to 350’. The testo Smart Probes App is a powerful and easy-to-use tool. It allows you to remotely read measurements from up to six (6) Smart Probes and easily document/report the results. Automatic calculations make it a snap! All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and/or shared by email. All your data can be stored and retrieved saving you hours of time consuming paperwork! Testo Smart Probes: Compact Bluetooth Instruments The compact and wireless Smart Probes can be operated by a smartphone or tablet via the testo Smart Probes app, which also provides complete reports at the push of a button. These durable multi-function probes are perfect for all aspects of the HVAC field. The Smart Probes offer you the following • Comprehensive selection of measuring instruments: smartphone anemometer, iPhone (and Android) hygrometer, smartphone thermometer and lots more • Practical kits for the most important applications in heating, air conditioning, ventilation and refrigeration • Operation and documentation entirely via the testo Smart Probes App