Petsafe deluxe ultralight Guide D'emploi page 21

Note: The Receiver Collar is waterproof, which can make the tone hard
to hear.
Save Test Light for future testing.
Note: If the Test Light does not flash, install a new battery and re-test.
If Test Light still does not flash, contact the Customer Care Center at
1-800-732-2677.
www.petsafe.net 21