Smart X-Sense XS0D-MR61 smoke detector set (6 detectors + 1 gateway). Includes optical smoke detectors with radio interconnection, so that all connected detectors activate simultaneously. The gateway offers connectivity via the application (X-Sense Home Security) with notifications for alarm signals, battery status, and offline status. It features muting capability through the device or the application, self-diagnostic check and status monitoring, as well as reduced night mode operation with LED. Powered by replaceable CR123A lithium batteries with a lifespan of up to approximately 5 years. Specifications: EN 14604. Includes 6 detectors, 1 gateway/base, power supply with cable, 6 magnetic mounting bases, and user manual.