... can be cust key finder with remote control/electronic key finder/remote control key finderOne Romote control matches 3 receivers,which are ... dee...),and push the button'A'on the Remote control,LED on,keychain will stop beep after matching.Make ... sure the LED is off.Then,turn on the second ... push'B',keychain will stop beep after matching.LED will be off in 4 seconds,then do ...