Hydrogen Cyanide (HCN) sensor is a replacement sensor for any of the MultiRAE family of gas detection meters the ToxiRAE Pro. Sensor Type: Electrochemical Range: 0 to 50 ppm Max Overload: 100 ppm Resolution: 1 ppm Bias/Equilibration: No bias/10 min. after installation Temperature Range: -4¡ F to 122¡ F (-20¡ C to 50¡ C) Pressure Range: Atmospheric ±10% Operating Humidity: 15 to 90% RH non-condensing Drift: < 2% signal/month Storage Life: 6 months in sealed container Storage Temperature: 32¡ F to 68¡ F (0¡ C to 20¡ C) Operating Life: 2 years in air Warranty: 1 year from date of shipment Calibration Gas: 10 ppm HCN, balance N2 Supported Instruments: MultiRAE Lite, MultiRAE, MultiRAE Pro, and ToxiRAE Pro