AutoPage 2-Way, 3-Channel Vehicle Security System/Car Alarm/Remote Start  - C3-RS6652W Alarm Remote Car Starter System 3 Channel Data Bus Communication Port 2 To 5 Button Transmitters With 2 Way Transceiver One LCD 2-way paging remote One 5 button high frequency (433.92 MHz Mini-size remote transmitters w/S.A.W. resonator & blue LED Two way XT-43 LCD Remote Transceiver with Blue backlight One, 5 button High Frequency (433.92 MHz) Mini-size Remote Transmitters w/S.A.W. Resonator & Blue LED C3 Compatible 2-Way data port Dedicated Buttons on the Icons on the Remote