AC-PSDS Series is a wireless smoke detector with built-in PIR motion sensor and heat detection capability. Designed to protect your family against potential fire hazards, the Smoke detector is also capable of detecting movement and reporting temperature to users. The Smoke Detector can be interconnected with other Smoke Detectors in the alarm system and will raise the alarm when any Smoke Detector in the system is triggered. Features: Reflective photoelectric sensor to detect smoke from any source, especially smouldering fires Loud 85dB Siren for audio alert Wireless for easy and flexible installation LED status indicators for visual notification Works in series with other Sync smoke alarms Specifications: Dimensions: H:14.6 x W:14.1 x D:10.5 cm Colour: White Guarantee:2 years Batteries Required: Yes Model Number: AC-PSDS Self Assembly Required: Yes