The Pyronix Wireless Intruder Alarm System is a reliable and efficient way to provide security for your property. This system includes a PIR Motion Detector, Alarm, and Door contacts and Shock sensors and wired expanders , all connected wirelessly for easy installation and convenience. With the option to add a Wireless Detector and Expander, you can expand the coverage of your alarm to ensure all areas of your home are protected. The Pyronix brand is known for its quality and durability, making this alarm system a trusted choice for peace of mind.