With more than 300 people dying each year from carbon monoxide poisoning and many more hospitalized, Research Products Corp. has introduced the Aprilaire Carbon Monoxide Alarm and Carbon Monoxide Alarm Test Kit. The CO detector is battery powered and has an easy to read indicator to let homeowners know when it's time to replace the detector (typically five years). The CO Alarm tester allows hvac technicians to check the sensor operation of any existing CO unit. For more information, contact Research Products Corp., P.O. Box 1467, Madison, WI 53701-1467; 800/334-6011; fax 608/257-4357.