DIY Wireless Security System - easy to install and ready to use, no programming is required * Rolling Code Technology - leading edge technology; provides maximum security and reduces false alarm * Ideal for homes, apartments, offices, businesses and condominiums * This system is good for most small to medium size house (approx up to 3000 sq. ft.); for a larger house more accessories should be added for coverage * Works in conjunction with up to 30 Skylink security accessories including Dial Alert