The TA-2100 hydrogen fluoride fixed gas detector with 0.1 ppm resolution from Mil-Ram Technology has no false alarms, with sensor technology specifically optimized for continuous-duty service under demanding field conditions. It has self-calibration/auto-gas calibration, with nonintrusive/hands-free/magnetic switches. Offsite sensor calibration is possible with a memory chip embedded in the sensor. It is not affected by temperature. It indicates remaining sensor life and replace sensor indication and number of days since last calibration. If offers continuous diagnostics, with a relay module, graphics LCD and wireless option. 510/656-2001; www.mil-ram.com.