TESTO 557s - Page 72

11 Technical data
72
Feature Value
Power supply
Current source: Rechargeable batteries /
batteries 4 x 1.5 V type AA / Mignon / LR6
Battery life:
> 250 h (display illumination off, Bluetooth off,
vacuum probe not connected)
> 100 h (display illumination on, Bluetooth on,
vacuum probe connected)
Auto off
30 min, if enabled
Display
type: Illuminated LCD
Response time: 0.5 s
Directives, standards and
tests
EU Directive: 2014/30/EU
You can find the EU declaration of
conformity on the Testo website,
www.testo.com, under the product-
specific downloads.
Available refrigerants
Feature Value
No. of refrigerants
~ 90
Selectable refrigerants in the
instrument
R114
R407C
R444B
R12
R407F
R448A
R123
R407H
R449A
R1233zd
R408A
R450A
R1234yf
R409A
R452A
R1234ze
R410A
R452B
R124
R414B
R453a
R125
R416A
R454A
R13
R420A
R454B
R134a
R421A
R454C
R22
R421B
R455A
R23
R422B
R458A
R290
R422C
R500
R32
R422D
R502
R401A
R424A
R503
R401B
R427A
R507
R402A
R434A
R513A
R402B
R437A
R600a
R404A
R438A
R718 (H2O)
R407A
R442A
R744 (CO2)
R11
R227
R417A