Our Products: The STCO-058 Carbon Monoxide Gas Alarm To guard against CO poisoning, we recommend that a CO Alarm be installed on each level of the home; however, if there is only one alarm in the home, it should be located near the sleeping area. 120V AC, simple plug-in with no installation required No replacement sensor neccessary Advanced semi-conductor sensor technology Instant test/reset feature Power/Alarm indicators Self-diagnostic circuitry Loud piercing 85 dB Alarm at 10 feet 5-year limited warranty Listed to UL2034 standard CO Response Time: @   70 ppm 60 -- 240 mins. @ 150 ppm 10 --   50 mins. @ 400 ppm   4 --   15 mins. How to Purchase Download Owner's Manuals CO Alarm Direct Plug In Single Station: STCO-058 STCO-850 CO Alarm Hard Wire Single Station: STCO-058H CO Alarm Battery Operated: STCO-305 Propane Detector Series: STCP-1000 Natural Gas Detector Series: STCH-1000LC STCH-1000HW STCH-1000HWR Professional Series: PSM-011 S-TECH 1495 DENISON STREET, MARKHAM, ONTARIO L3R 5H1 TEL:(905) 660-90661-800-203-7987 FAX:(905) 660-9261 E-mail: info@s-tech.ca Website: www.s-tech.ca