The complete Smanos smart home system line-up speaks minimalistic elegance, self-install and self-monitor. From wireless, app-enabled alarm and automation systems to remote security, energy and health management, Smanos solutions cater to today's homeowners' versatile and mobile lifestyles and ensure they have complete control, comfort and visual confirmation right at their fingertips within a few short minutes and easy steps. The DS2300-4 works well with any door, window or opening. When triggered (separated), an alarm signal will be sent to the system for appropriate response. It also comes with tamper protection to ensure system integrity, and can work with other wired detectors. This kit features 4 door and window sensors for use in 4 different locations.