The G450 detector continuously measures carbon monoxide, oxygen, hydrogen sulfide, and combustibles in ambient air. The data logger records gas concentrations and alarms over a period of 50 hours. The data can be downloaded to a PC for viewing, storing, and evaluations. The optional motorized pump operates in diffusion or sample-draw mode. The unit has three alarms. The audible alarm (103 dB at 30 cm - restrictable to 95 dB) and bright, rotating alarm lights provide warning for gas hazards. Depending on the alarm status, the display changes color from green to orange or red. A vibrating alarm gives an extra degree of protection in loud environments. Depending on the frequency and duration of the alarms, the device will operate for up to 25 hours. The sensors come with a full three-year warranty.

GfG Instrumentation Inc., 1194 Oak Valley Dr., Ste. 20, Ann Arbor, MI 48108; 734-761-5168,;

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