... use; 3),Best quality,Lowest price; Key Locator with keychain KF-002T1 GIFT PROMOTION How to Use? Match: ... Turn Up the keychain's switch to "On" Position,it will beep ... ..."),and push the button press here on the card,keychain will stop beep after matching. Find: When you ... button "press here" on the card,and the keychain will sound alarm within 1 second,alarm will last ...