• Measuring range -50 to +150 °C
• Accuracy ±0.5 °C (±1 Digit)
•  Resolution 0.1 °C
• Probe connection 3 x Plug-in (NTC)

• Measuring range 50 bar
• Accuracy ±0.5 % fs (±1 Digit)
• Resolution 0.01 bar / 0.1 psi
• Probe connection 3 x 7/16" – UNF + 1 x 5/8'' – UNF
• Overload rel. (low pressure) 52 bar
• Overload rel. (high pressure) 52 bar
• Low pressure rel. 50 bar
• High pressure rel. 50 bar

Vacuum Measurement 

• Measuring range -1 to 0 bar
• Accuracy 1 % fs
• Resolution 1 hPa / 1 mbar / 500 micron

• Protection class IP42
• Battery life approx. 40 h (w/o illumination)
• Dimensions 280 x 135 x 75 mm
• Display type LCD
• Operating temperature -20 to +50 °C
• Pressure media CFC; HFC; N; H₂O; CO₂
• Refrigerants in instrument R402B; R718 (H₂O); R600; R502; R123; R406A; R424A; R407C; R402A; R600a; R421A; R123; R417A; R422B; R414B; R507; R404A; R408A; R407A; R503; R421B; R434A; R410A; R12; R422A; R427A; R401B; R134a; R413A; R438A; R420A; R290; R409A; R422D; R22; R401C; Ra11A; R1234yf (display: T8 for Testo 557) refrigerant update possible by customer (via "EasyKool" software); R401A; R437A; R227; R744 (only in the permitted measurement range up to 50 bar); R416A
• Storage temperature -20 to +60 °C
• Weight 1200 g