The Hills wireless security alarm DIY starter kit is a self-monitoring alarm system that works on a 3G/2G mobile network. Key features include easy DIY installation and setup, as the sensors wirelessly communicate to the panel. Arm, disarm and configure the panel by SMS or via smart phone App. The energy efficient sensors operate on batteries for up to 1 year and the panel has a secure built-in siren and backup lithium batteries which last up to 8 hours. Add up to 50 sensors to your panel to secure your home.To make using your Hills wireless security alarm even easier, remote access control of your alarm and configuration of its settings may be performed from your smartphone using the Hills DIY Wireless Security App.