- Press on the measurement button to turn the device on.
- Then press on the °C/°F button for 3 seconds, screen will display F1.
- Press again for 3 seconds, it will display F2.
- Press again for 3 seconds, it will display F3.
- Press the °C/°F button or the Mode button. Screen displays 0 when the sound is inactivated and 1 when activated.
- Repeat steps to turn sound back on.
* Please be advised, the High Temperature Threshold Alarm will not go off when device has been silenced (F3=0)