Avital Avistart 4115L Remote Start with two 1-button Remote Controls; The convenience of remote start in the smallest-size Avital remote ever. Perfect for use with OEM keyless entry integrated into the OEM key. Get the longer range for remote starting that you want! A dedicated A-to-D converter samples your vehicle’s voltage hundreds of times each second, eliminating the need for a tachometer wire connection. TheD2D serial data port; Quickly connects your Avital system to other interface devices via D2D cables. XCR onboard relays; Extreme capacity remote start relays are built-in to Avital remote start systems. Bitwriter programmable; Program your Avital system with the Innovations Award-winning Bitwriter hand-held programmer.