Key Features . Yale Smoke Detector allows you to Synchronise your home protection with your fire protection.When smoke is detected both the in-built siren and alarm will trigger.In built heat sensor that is visible on the app Works up to 200m away from the control panel.Heat sensor sends a signal when the temperature changesFully Wireless design200m RangeSync and; Intruder Alarm Accessory The Yale Intruder Alarms secure your home and alerts you when your alarm is triggered. The extended 200m wireless range enables you to protect out buildings as well as your home. The intuitive wireless system has been designed with DIY in mind ensuring the Intruder Alarms really are easy to fit. No wiring or running cables in walls or under the carpet and you won\'t the services of a qualified electrician. What\'s in the Box . 1 Smoke DetectorBatteriesFixing Pack . Compatible with Yale Sync and; Intruder Alarm Range (IA Range). .