Companies that deal in remote start and vehicle security systems do car alarm repairs. Examples of such companies include Crimestopper Security Products, Inc, The Specialists Car Audio and Viper.
Car alarm repair companies deal with various vehicle security systems. For example, the three companies offer 1-way and 2-way security systems that have varying ranges of operation.
Those types of companies also deal with various products and services that cover the general safety of the car. For example, Crimestopper offers services such as blind spot detection systems, packing assist systems, mobile DVR systems and various types of car cameras.
A car alarm repair company also deals with security accessories such as the door lock pulse generator, door lock interface and digital motion sensor sold at The Specialists Car Audio.