The IAQ Observer is an IAQ monitor that measures and records CO2, CO, temperature, and rh. It is designed for unattended monitoring and offers tamperproof testing with key-locked on-off controls and a security lock and cable. This rental-only unit can be rented for a week or more. According to the manufacturer, there is no software to install. The data is uploaded to a secure website, and, through use of a unique user name and password, the user can check his/her data. Options include e-mail and shipment of disks and printouts.

KD Engineering, Inc., 161 C St., Ste. 113, Blaine, WA 98230; 800-308-7717; 800-739-4497 (fax); (website).

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