testo 549 - Digital manifold

Order-Nr.  0560 0550

  • 60 refrigerant profiles stored in the instrument

  • Rugged housing with additional one year warranty (with registration)

  • Large 2-line backlit display

  • 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.


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

Delivery Scope

testo 549, digital manifold; including batteries, certificate of conformity, and user's manual.

Technical Data


Measuring range

-58° to 302 °F / -50 to +150 °C


±0.9 °F / ±0.5 °C


0.1 °F / 0.1 °C

Probe connection

2 Temperature NTC measurement channels

Pressure measurement

Measuring range

-15 to +870 psi / -1 to +60 bar


±0.5 % Fs


0.14 psi / 0.01 bar

Probe connection

3 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


37.39 oz. / 1060 g


7.87 x 4.29 x 2.48 in. / 200 x 109 x 63 mm

Operating temperature

-4° to 122 °F / -20 to +50 °C

Protection class


Product colour


Battery life

approx. 250h (display light off, Bluetooth off)

Refrigerants in instrument

R114; 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 Service

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

Storage temperature

-4° to 140 °F / -20 to +60 °C


Temperature probes

$ 72.00
excl. tax



Transport case for extensive accessories

Order Number: 0516 0012

$ 151.00
excl. tax
$ 46.00
excl. tax