Testo 549i Smart High-Pressure Gauge For Refrigeration Systems

The Testo 549i is a compact, smartphone-operated high-pressure gauge designed for wireless diagnostics of air conditioning and refrigeration systems. With a measurement range of -15 to 870 psi (-1 to 60 bar), it enables precise pressure monitoring while eliminating the need for traditional hoses—reducing refrigerant loss during servicing.

• Wide Pressure Range: -15 to 870 psi (-1 to 60 bar) with ±0.5% full-scale accuracy
• Hoseless Design: Direct connection to 7/16 in. UNF pressure ports minimizes refrigerant loss
• Media Compatibility: Works with CFC, HFC, HCFC, nitrogen, water, and CO₂ systems
• Bluetooth 4.0 Integration: Pairs with iOS/Android devices (~65 ft/20 m range)
• Smart Probes App: Auto-calculates temperatures, displays data as graphs/tables, exports to PDF/Excel
• Compact Design: 5×1×1 in. (125×32×31 mm), 5.52 oz (156.6 g) for one-handed use
• 45° Connector: Allows easy access to tight spaces
• Long Battery Life: 150 hours with 3x AAA batteries

• Testo 549i high-pressure gauge
• Batteries
• Calibration protocol
• Quick start guide