Features:

• Large graphic display for easy evaluation of measurement results
• Wireless temperature and vacuum probes
• 4 hose set
• All measurement shown on large display at the same time
• Exceptionally fast measurements on refrigeration and air conditioning systems and heat pumps
• Stored programs guide you through the measurement and make it possible to automatically determine key system parameters such as superheating, pressure drop test or evacuation
• 4-way valve block for commissioning, servicing, and maintenance of refrigeration systems and heat pumps
• Bluetooth connectivity enables the use of Testo Smart probes
• Fast and easy pressure value display in analog look
• Integrated calculation of the target superheat
• 90 refrigerant profiles built-in at purchase and can be upgraded later
• Measurement reports can be sent instantly on the job via mobile App
• Testo Smart App: create digital documentation directly on site, set your own favorites, always have the latest refrigerants thanks to automatic updates

Specifications:

Specifications:	Testo 557s Smart Vacuum Kit Digital Manifold
	Pressure	Temperature
Measuring range	-15 to 870 psi (-1 to 60 bar)	-58 to 302 °F (-50 to +150 °C)
Accuracy (at 70 °F)	±0.5 % fs	±.9 °F (±0.5 °C)
Resolution	0.14 psi / 0.01 bar	0.1 °F (0.1 °C)
Connections	3 x 7/16" – UNF	2 x plug-in (NTC probes) (Wired Clamps Not Included with this Kit)
Overload	940 psi (65 bar)	-
General
Operating temperature	-4° to 122 °F (-20 to +50 °C)
Storage temperature	-4° to 140 °F (-20 to +60 °C)
Battery life (4 x AA)	250 h with no illumination, no Bluetooth®; 100 h with illumination and Bluetooth®
Dimensions	9 x 4.4 x 3 in. (LxWxH) / 229 x 112.5 x 71 mm (LxWxH)
Weight	44 oz. / 1243 g
Auto-off	10 min (when not connected via Bluetooth)
Data transfer	Bluetooth®
Bluetooth technology/ range	Bluetooth® 5.0 (up to 500 ft)
Protection class	IP54
System requirements	requires iOS 12.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
Refrigerants in instrument	R407H; R23; R290; R1234yf; R442A; R134a; R123; R452B; R438A; R421A; R453a; R401B; R1233zd; R410A; R407A; R407C; R452A; R401A; R422C; R427A; R422B; R424A; R125; R414B; R404A; R408A; R448A; R422D; R12; R114; R421B; R449A; R409A; R420A; R444B; R32; R454A; R124; R402A; R450A; R407F; R416A; R13; R437A; R1234ze; R454B; R402B; R22; R434A; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H2O); R744 (CO2)
Refrigerants update via App	R11; FX80; I12A; R1150; R1270; R13B1; R14; R142B; R152A; R161; R170; R227; R236fa; R245fa; R401C; R406A; R407B; R407D; R41; Ra11A; R412A; R413A; R417A; R417B; R417C; R422A; R426A; R508A; R508B; R600; RIS89; SP22

Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.