FM TWO-WAY LCD PAGER CAR ALARM MODEL: GD668 Features: 1) FM 2-way communication between the transmitter and vehicle 2) Control distance: 600m, feedback transmission distance 2,000m up 3) 3 color transmitter display visual confirmation of operation, clock and car status 4) Transmitter battery is rechargeable, anti-robbery (starter disable) 5) Arm / disarm, mute arm / disarm, automatic rearm (re-lock doors) 6) Auto central locking 6) Transmitter keyboard locking / unlocking 7) Remote panic, emergency alarming and siren pause, car locator 8) Reminder of arming and closing doors 9) Overtaking alert, emergency override 10) Learning code 11) Automatic circumstance identification 12) Intelligent identification triggering with two alert modes 13) Pneumatic / electronic door lock programmable 14) Dome light suspend 15) Memory alarm 16) Positive / negative triggering programmable 17) Power window raising signal output