Keyless Entry with 2 Flip Keys for Mercedes-Benz W124 Remote Keyless Entry: Lock and unlock the doors and trunk with a push of a button. Two Flip Key Remotes: Hand-held and easy to use, with the key built in. Parking Light Flash: Provides visual confirmation. 3 Remote Auxiliary Outputs: You can use them for the trunk release, window roll-up module, or factory alarm activation. Detailed installation manual with 2 mounting locations for the do-it-yourself installer.