testo 550s Set (includes 2x 115i) – Smart measurement device for high/low side pressures and temperatures The testo 550s kit is the ideal set of products for highly reliable and flexible measurement and documentation. Thanks to its smart Bluetooth integration, data can be stored and evaluated reliably and efficiently. The 2 clamp probes facilitate rapid evaporator and condenser temperature measurements, thus ensuring that the refrigeration system is running at maximum efficiency. Technical Data: testo 550s: Temperature measuring range: -58° to +302°F / - 50° to +150°C Temperature measurement accuracy: +-0.9 °F / +-0.5 °C Pressure measuring range: -15 to 870 psi / -1 to 60 bar Pressure measurement accuracy: +-0.5 % of full-scale value Pressure overload relay: 943 psi / 65 bar Vacuum measuring range: -15 to 0 psi / -1 to 0 bar Probe connection type: 2 x plug-in (NTC) System Requirements: requires iOS 11 or higher; requires Android 6 or higher; requires mobile end device with Bluetooth 4.0 Scope of delivery: Scope of delivery: 1 x testo 550s manifold, including batteries, 2 x testo 115i pipe clamp thermometer, 1 x Protective case, Banderole, instruction manuals and calibration protocols