S-Tech takes great care and pride in all of our products. Click on any of the models below to learn more about our products. Carbon Monoxide Alarm Testers - Alarmate Series: AM-00 AM-58 AM-U (universal) Carbon Monoxide Alarms - Plug-In, Single Station: STCO-058 STCO-850 Carbon Monoxide Alarms - Hard-Wire, Single Station: STCO-100HN Carbon Monoxide Alarm / Clock Radio - COCR Series: COCR-015 Carbon Monoxide Alarms - Battery Operated: STCO-300 STCO-305 Propane Gas Detectors - STCP Series: STCP-1000 STCP-4000 Natural Gas Detectors - STCH Series: STCH-1000LC STCH-1000HW STCH-1000HWR Professional Series Alarms - PS Series: PSM-011 Thermostat - STL-200: STL-200 How to Purchase Warranty Registration Alarm Tester Series: AM-00 AM-58 AM-U CO Alarm Direct Plug In Single Station: STCO-058 STCO-850 CO Alarm Hard Wire Single Station: STCO-100HN Clock Radio Combo: COCR-015 CO Alarm Battery Operated: STCO-300 STCO-305 Propane Detector Series: STCP-1000 STCP-4000 Natural Gas Detector Series: STCH-1000LC STCH-1000HW STCH-1000HWR Professional Series: PSM-011 Thermostat STL-200