Single-Gas Detector Replaceable Battery Yes Product Type Single-Gas Detector Display Screen Type LCD Dot Matrix Includes Probe No Housing Color Yellow Gas Detected Carbon Monoxide Communication Protocol Bluetooth Series BW Solo Sub-Brand BW Battery Size AA Operating Humidity - Maximum 95 Percent Status Indicator LED Rechargeable Battery Yes Resistance Properties Dust Resistant Water Resistant Operating Humidity - Minimum 5 Percent Sensor Type Electrochemical Temperature Code T4