Tested to relevant European and British standards, X-Sense are an industry leading brand in smart smoke, heat and CO alarms. The discrete, battery operated, wireless modern design allows quick and easy installation whilst offering maximum safety and security for your loved ones. All the alarms can be interlinked together, and when paired with a X-Sense SBS50 Base Station (not included) can be controlled and monitored whilst away from home from your smart phone. X-SENSE Smart Smoke Detector & Heat Alarm Home Fire Safety Kit in White