Single-Gas Detector, Replaceable Battery Yes, Product Type Single-Gas Detector, Display Screen Type LCD, Includes Probe No, Housing Color Black, Gas Detected Hydrogen Cyanide, Communication Protocol Not Applicable, Series GasBadge Pro, Battery Size 2CR, Operating Humidity – Maximum 99 Percent, Battery Voltage 3 V, Resistance Properties Water Resistant, Operating Humidity – Minimum 0 Percent, Temperature Code T4