Omega OS643 manual Operating Instructions, Push buttons

OPERATING INSTRUCTIONS

Push buttons

Display Back-Light Button

Release MEAS button then press "" button to toggle between turn on and turn off the Back-Light. When releasing MEAS button Back-Light will turn off auto- matically after 15 seconds to extend battery life.

MEAS (MEASURE) Button

Depress MEAS button to turn on the meter for measuring temperature. Releasing MEAS button to stop measuring temperature and automatically hold the display reading, the meter turns off automatically after 15 seconds.

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