ETvalley Wireless Key Finder/Locator with LED Flashlight and Remote Base 1 RF Transmitter 4 Receiver for Keys Four receivers and one remote with flashlight & a base to keep the remote in a safe place so you wont lose it. The one remote is connected to all four receivers for easy and convenient usage of this item finder. One little click on the remote is enough for you hear your keys within a reach of 32-44 yards in an open area. The flashlight integrated into the remote makes it easier for you if you have to go on a key hunt in the dark, just switch the light on and youll have much better vision. The sound is loud enough to be able to hear it from some distance but also not so loud that it becomes an earsplitting sound.