TA-2100 - RS485/4-20mA 3 or 4-wire smarter gas detector detects hundreds of different gases utilizing several sensor technologies: electrochemical, infrared, catalytic, photo-ionization, solid-state and more. The TA-2100 gas detector uses Mil- Ram’s no false alarms, chemically selective, patented sensors for the detection of toxic, oxygen, LEL combustible and VOC gases.Mil-Ram Technology, Inc., www.mil-ram.com, (510) 656-2001.