The Testo 0560 2549 03 549i High-Pressure Gauge is a sophisticated tool designed for measuring pressure in HVAC and refrigeration systems. This wireless gauge operates via smartphone and has a measuring range of -15 to +870 psi or -1 to +60 bar. With an accuracy of ±0.5% of full-scale value, it provides precise measurements for a variety of pressure media including CFC, HFC, HCFC, N, H₂O, and CO₂. The gauge features a durable plastic housing in black and orange colors, making it both practical and visually identifiable in industrial settings. With a battery life of 150 hours and an overload relief valve for high pressure, the Testo 549i is a reliable and convenient tool for professionals in the HVAC and refrigeration industry.