... want to find. LED--It will show a red light when the signal is sending out. Buttons--3 Buttons ... position,it will beep constantly("dee...dee..."),and push the button"A",LED on,keychain will stop beep after ... LED off,Then turn on the 2nd keychain,and push button"B",keychain will stop beep after match,LED will ... then stop automatically.The receiver is very small and light,very easy to secure to the keys:4.5 ...