Smart Probes AC Refrigeration Test Kit, Number of Valves 0, Multiple Refrigerants, Number of Hoses 0, 0 to 870 psi, -14 to 870 psi, +/-0.50 Percent, Brass, 350 ft Bluetooth Range, Smart Probes APP Automatically Calculates Superheat, Subcooling, FCC ID: 2ACVD-1115, FCC ID: 2ACVD-1549, Includes (2) 115i Smart Probe Pipe-Clamp Thermometers, (2) 549i Refrigeration Smart Pressure Probes, Batteries, Soft Carrying Case