TESTO 270 BT - Important Display Messages; Control Keys

5 Product description
9
5.4 Important display messages
Items shown
Function/property
000 lights up
Instrument is ready to measure, sensor is not in oil.
Reading >190 flashes
Measured temperature is above 190 °C (374 °F).
The reading flashes in the range from 190.1 °C
(374 °F) to 200 °C (392 °F).
Auto hold no longer possible. No measured
values are recorded and not transferred to the
app.
SER lights up
Service - We recommend a technical check of the
instrument by Testo Customer Service.
5.5 Control keys
Key
Function/property
[ ]
• Switch instrument on/off
• Configure instrument
[Hold]
• Start Auto-Hold measurement
• Switch to the measuring mode
• Configure instrument
[ ]
• on/off; yes/no - Configure instrument
[ ]
• on/off; yes/no - Configure instrument