XS01-WR Wireless Interconnected Smoke Alarm

Sensitive & Accurate: Advanced sensors detect smoke early, with dust-proof design for reliable performance   Interconnected Alert: If one alarm detects danger, all units will activate. Network up to 24 X-Sense Link+ devices   5-Year Replaceable Battery: Advanced battery provides 5 years of reliable protection with timely low-battery alerts and convenient self-replacement   Mini Design: 3.1 × 1.9 in with hidden mount for a clean look