Fluke 165X Installation Manual page 26

No. Annunciator
R
battery test
S
ZERO
Y
T
Appears when you are testing the batteries. For more information see "Testing and
Replacing the Batteries" on page 41.
Appears when you press the Z button to zero the leads. After the zeroing
operation, the icon stays illuminated indicating that zeroing has been performed.
Only used when performing continuity or loop testing.
Potential danger. Appears when measuring or sourcing high voltages.
Electrical Installation Tester
Meaning
Operating the Tester
15