Profile: Thermal Gas Systems Inc. deals with refrigerant gas monitoring systems. Our brand name is Haloguard®. Our products include photo acoustic infrared refrigerant monitors, CMOS refrigerant monitors, CO detection & ventilation control systems for parking structures, and oxygen depletion monitors. The Haloguard® IR photo acoustic infrared refrigerant monitor has 1, 2, 4 and 8 channels. It has three alarms adjustable between 10 ppm and full scale. It can monitor up to 3 different gases simultaneously, from up to 24 points by adding remote IR modules and channel scanners. The Haloguard III features wide-band photo acoustic infrared (PIR) technology for monitoring up to 8 gases with sensor and controller all-in-one. It has three alarms adjustable between 50 ppm and full scale.