The CO1224TR Carbon Monoxide (CO) Detector with RealTest from System Sensor is a round version of the award-winning System Sensor CO1224T CO detector. It is designed for ceiling or wall applications where a round device better suits the aesthetics.Like the CO1224T, the CO1224TR includes RealTest - the first and only field functional CO test fully compliant with NFPA 720: 2009. Only RealTest enables installers to quickly verify that the CO detectors they install are actually protecting customers. The CO1224T and CO1224TR also provide multiple mounting options and are quick and easy to install, test and maintain. With a low current draw, the latest electrochemical sensing cell, and a six-year end-of-life timer, the CO1224T and CO1224TR provide the most reliable protection available. Also known as -System Sensor By Honeywell-Us CARB MONOXIDE DTCTOR ROUND W/ T - BK-CO1224TR
