TESTO 550s - 6 Product Description; Overview of the Testo 550 S

6 Product description
8
6 Product description
6.1 Overview of the testo 550s
1
Mini-DIN probe socket for NTC
temperature probe, with socket
cover
2
Foldable suspension device
(rear).
3 Display. Instrument status icons 4
Rear
•
Battery compartment
•
Mini USB port for firmware
update
It is not possible to charge
rechargeable batteries in the
instrument.
5
Control keys
6
Sight glass for refrigerant flow
7 2 x valve positioner 8
3 x hose bracket for refrigerant
hoses
9
3 x connections 7/16" UNF, brass
Left/right: Low/high pressure for
refrigerant hoses with quick