AutoPage 4-Channel Vehicle Alarm Security System with 2-way AM/AM LCD Transmitter - RF-425LCD 4-Channel vehicle alarm security system Includes a 2-way AM/AM LCD Transmitter and a 5-button companion remote Ergonomic LCD transceiver with 19 visible icons that make the system easy to use High frequency transmitter provides an extended range signal Dual stage shock/impact sensor New XT-43LCD Two-Way 4-Button AM/AM mini-LCD Remote Transmitter One 5-Button XT-33 Standard One way mini-transmitter with Blue LED 56 Bit Random Code Hopping Over 75 trillion available codes Dedicated Chirp Delete from Remote