Riken Keiki NP-1000, Руководство по эксплуатации

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4. How to Use 4-9. Power-off
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3 Press the ENTER
button.
The record is saved and the
detection mode returns.
▼
4-9. Power-off
Press and hold the POWER button (at least three seconds) until the buzzer blips four times ("TURN OFF"
disappears) to turn off the power.
CAUTION
• Do not turn off the power while the gas concentration display indicates a high value.
A high-concentration gas that remains in the gas detector may adversely affect the sensor.