Combination Gas Detector: Safeguard Your Home Or Hotel With A High-Precision Sensor That Monitors Co, Natural Gas, Propane, Temperature, Humidity, And More, Ensuring Peace Of Mind. Plug And Play: Experience Hassle-Free Setup By Simply Plugging Into An Eu Outlet, Ideal For Smart Homes And Rvs Without Needing To Replace Batteries. User-Friendly Design: Enjoy A Dimming Screen When No Gas Is Detected To Reduce Light Disturbance, Making It Perfect For Nighttime Use. Sound & Screen Alerts: Get Early Warnings With A Loud 75Db Alarm And Clear Lcd Screen Display, Alerting You To Potential Dangers Swiftly. Friendly Customer Service: Benefit From A Three-Year Warranty And Lifetime Technical Support, With Quick Assistance Available Within 24 Hours. Enhance Your Safety With A 4-In-1 Monitor Alarm Designed To Blend Seamlessly Into Any Modern Living Space, Offering Advanced Protection Against Co And Smoke. Smart Features Include Remote Alarm And Intelligent Linkage, Empowering You To Stay Connected And Secure.