The Testo 115i Wireless Clamp Thermometer is a compact Bluetooth temperature probe designed for HVAC-R technicians working on refrigeration, air conditioning and heat pump systems. Built for fast pipe temperature measurement, it connects directly to the Testo Smart App, allowing technicians to view live readings, calculate system performance and document results from a smartphone or tablet.
Ideal for measuring flow and return pipe temperatures, the Testo 115i is especially useful for superheat and subcooling calculations when paired with compatible Testo pressure probes or digital manifolds. Its wireless design removes cable clutter around the service area, while the clamp-style sensor provides secure contact on refrigeration pipework.
Key Features
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Wireless clamp thermometer for HVAC-R service work
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Measures pipe surface temperature on refrigeration and AC systems
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Bluetooth connection to the Testo Smart App
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Ideal for superheat and subcooling calculations
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Can be used with Testo 549i pressure probes and Testo digital manifolds
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Suitable for flow and return pipe temperature measurement
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Clamp-style contact sensor for secure pipe connection
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Compact cordless design for easier site use
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App-based live readings, graphs and service documentation
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Commonly included in Testo Smart Probe and digital manifold kits
Specifications
| Item | Specification |
|---|
| Brand | Testo |
| Model | Testo 115i |
| Product Number | 0560 2115 02 |
| Product Type | Wireless Clamp Thermometer |
| Measurement Type | Pipe surface temperature |
| Temperature Range | -40°C to +150°C |
| Accuracy | ±1.3°C from -20°C to +85°C |
| Resolution | 0.1°C |
| Connectivity | Bluetooth / Testo Smart App |
| Clamp Opening | Up to approx. 35 mm pipe diameter |
| Compatible Systems | Refrigeration, air conditioning and heat pump systems |
| Compatible Instruments | Testo Smart App, Testo 549i, Testo digital manifolds |
| Power Supply | 3 × AAA batteries |
| Application | Superheat, subcooling, flow/return temperature measurement |
Applications
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Air conditioning servicing
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Refrigeration diagnostics
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Heat pump commissioning
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Flow and return pipe temperature measurement
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Superheat and subcooling calculation
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Split system installation checks
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Refrigerant circuit performance testing
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Wireless HVAC-R service documentation
The Testo 115i — 0560 2115 02 gives HVAC-R technicians a practical wireless solution for accurate pipe temperature measurement. With Bluetooth app connection, clamp-style convenience and strong compatibility with Testo Smart Probes and digital manifolds, it is an essential temperature probe for modern refrigeration and air conditioning service work.