Multi-Gas Detector Replaceable Battery Yes Product Type Multi-Gas Detector Display Screen Type Monochrome Includes Probe Yes Housing Color Yellow Gas Detected Carbon Monoxide Combustible Gas Hydrogen Sulfide Oxygen Communication Protocol Bluetooth Wireless Series BW Flex Sub-Brand BW Battery Size 5V Operating Humidity - Maximum 95 Percent Status Indicator LED Rechargeable Battery Yes Battery Voltage 3.7 V Operating Humidity - Minimum 0 Percent Sensor Type Infrared