About This Advanced CO2 Monitoring: Each unit in the dual pack actively measures CO2, temperature, and humidity, ensuring comprehensive air quality monitoring in multiple locations or rooms. Enhanced Battery Life and Efficiency: Featuring the latest Photoacoustic CO2-Sensor with intelligent algorithms, these monitors support dual detection modes and boast an impressive standby time of up to 70 days. Compact and Multi-Use Design: Designed for convenience and portability, each monitor comes with a detachable stand and an adsorptive back, perfect for checking air quality anywhere, anytime. Customizable Alarm Modes: The monitors include multiple alarm modes with color-coded alerts and optional audio warnings for exceeded CO2 concentrations, enhancing safety and responsiveness. Discreet Operation Mode: Equipped with a 'no disturb' mode that silences sound alarms and minimizes light emissions, these monitors are ideal for nighttime use, providing peace without sacrificing monitoring. Overview Brand : Temtop Style : C1 (CO2, T&H) Power Source : Battery Powered Color : Black/White Product Dimensions : 5.51"D x 1.26"W x 4.09"H Item Weight : 5.6 ounces Alarm : Buzzer alarm Material : Metal, Plastic Number of Items : 2 Manufacturer : Elitech