IR-281 QUICK REFERENCE 1.Function keys The marked button has the following two functions. a) The first function is for turning the camera on and off. Press this button for more than three seconds to turn on/off the camera. b) The second function is for freezing and unfreezing images.
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IR-281 QUICK REFERENCE GUIDE 2. Basic operation 2.1 Battery installation and replacement 2.1. 1 Battery installation Insert 3 AAA batteries into the battery compartment according to the directions of the positive and negative poles, insert the battery compartment into the battery socket, close the battery cover and boot.
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IR-281 QUICK REFERENCE GUIDE 2.2 Quick Start 2.2.1 Capture thermal image After the battery is installed, press the power button (longer than 3 seconds) until the startup screen appears. After the startup screen, it is ready to use. 2.2.2 Temperature measurement When the target temperature is lower than -20°C (-4°F) The...