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  • TESTO 549 Digital Manifold – 2 Temperature NTC

    # 549

    • 60 refrigerant profiles stored in the instrument
    • Rugged housing with additional one year warranty (with registration)
    • Large 2-line backlit display

    Product Description

    The versatility of 60 on-board refrigerant profiles means the testo 549 digital manifold is the only gauge that you need. The proven, rugged design will give you years of dependable service. With optional temperature probes the testo 549 digital manifold provides accurate, real-time superheat and sub-cooling at the push of a button.


    • Measures high side / low side pressure and displays saturation / evaportation temperatures
    • 2-way valve block with three connections and sight glass
    • 60 refrigerant profiles stored in the instrument
    • Large 2-line backlit display
    • Provides real-time superheat and sub-cooling with optional temperature probes
    • Rugged housing with additional one year warranty (with registration)
    • Digital accuracy performs more reliably than analog manifold gauge sets for more precise readings


    The testo 549 digital manifold is a breakthrough value, making analog gauges obsolete. It precisely measures high side / low side pressure and instantly displays the corresponding saturation / evaporation temperatures for 60 refrigerants. With optional temperature probes, automatic superheat and sub-cooling calculations can also be displayed.

    Measuring range-58° to 302 °F / -50 to +150 °C
    Accuracy±0.9 °F / ±0.5 °C
    Resolution0.1 °F / 0.1 °C
    Probe connection2 Temperature NTC measurement channels
    Pressure measurement
    Measuring range-15 to +870 psi / -1 to +60 bar
    Accuracy±0.5 % Fs
    Resolution0.14 psi / 0.01 bar
    Probe connection3 x 1/4″ SAE
    Overload rel. (high pressure)943 psi / 65 bar
    Measuring range-15 to 0 psi (indication) / -1 to 0 bar
    General technical data
    Weight37.39 oz. / 1060 g
    Dimensions7.87 x 4.29 x 2.48 in. / 200 x 109 x 63 mm
    Operating temperature-4° to 122 °F / -20 to +50 °C
    Protection classIP42
    Product colourBlack
    Battery lifeapprox. 250h (display light off, Bluetooth off)
    Refrigerants in instrumentR114; R12; R123; R1233zd; R1234yf; R1234ze; R124; R125; R13; R134a; R22; R23; R290; R32; R401A; R401B; R402A; R402B; R404A; R407A; R407C; R407F; R407H; R408A; R409A; R410A; R414B; R416A; R420A; R421A; R421B; R422B; R422C; R422D; R424A; R427A; R434A; R437A; R438A; R442A; R444B; R448A; R449A; R450A; R452A; R452B; R453a; R454A; R454B; R454C; R455A; R458A; R500; R502; R503; R507; R513A; R600a; R718 (H₂O); R744 (CO₂)
    Refrigerants update by Testo ServiceR11; 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
    Storage temperature-4° to 140 °F
    • Testo 549, digital manifold
    • Including batteries
    • Certificate of conformity
    • User’s manual.

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