Crimestopper RS7-G2 Remote Start 2 Way Paging Keyless Entry System with One 2 Way Transmitter and One 1 Way Back-Up Transmitter 2 way paging and remote start with range up to 3500 feet Enhanced white and red LED backlighting on paging remote; built-in clock on LCD remote Dynamic code protection confirms commands and system triggers on transmitter LCD screen Audible and visual arm/disarm with intrusion alert; engine start notification; includes DC charger for 2 way pager Works on diesel and gas engines; positive and negative door trigger inputs (selectable); (-) hood/trunk trigger input; double unlock pulse (programmable)