Extech Instruments AN500 User Manual page 3

Push-button Description
Power: Switches the meter ON and OFF
C/F: Select the temperature units
MAX/MIN: Press to Record and track the highest (MAX) and lowest (MIN) reading
STORE: Store readings into memory
RECALL: Display STORED readings
UNIT: Air velocity units or airflow units of measure
ZERO: Press to zero the display
BACKLIGHT: Turn LCD backlight ON and OFF
SET: Atmospheric compensation setting or airflow parameters setting
◄►▲▼: Atmospheric compensation adjustment arrows (also used for general menu
navigation)
Probe Description
1. Probe Connector
2. Probe cabling
3. Telescoping sensor handle - Extends to 39" (1m)
4. Sensor opening (Air must flow through this opening against
the white dot shown on item 5 below for proper
measurement)
5. White dot air direction
6. Ergonomic handle grip
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