3 Specifications
9
Feature Values
Measurable media Measurable media: all media that is stored in
the testo 557. Not measurable: ammonia
(R717) and other refrigerants which contain
ammonia
Ambient conditions Operating temperature: -4…122°F
/ -20…50°C
-10 ... 50°C / 14 ... 122 °F (Vacuum)
Storage temperature: -4…140°F / -20…60°C
Humidity in area of use: 10… 90%rF
Housing Material: ABS / PA / TPE
Dimensions approx. 280 x 135 x 75 mm
Weight: approx. 1200 g (without batteries)
IP-class 42
Power supply Current source: Rechargeable batteries /
batteries 4 x 1.5V type AA / Mignon / LR6
Battery lifetime: approx. 250 h (Bluetooth off,
vacuum probe not connected)
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 homepage
www.testo.com under the product-
specific downloads.
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