Multi-Gas Detector Replaceable Battery Yes Product Type Multi-Gas Detector Display Screen Type LCD Includes Probe No Housing Color Black Gas Detected Carbon Monoxide Hydrogen Sulfide Communication Protocol Not Applicable Series Tango TX2 Battery Size 3.6V Operating Humidity - Maximum 95 Percent Rechargeable Battery No Battery Voltage 3.6 V Operating Humidity - Minimum 15 Percent Sensor Type Electrochemical Temperature Code T4 Alarm Volume Level 100 dB @ 3.9 in Battery Life 2 yr