With RealTest™ technology, the CO gas sensing cell used in the CO1224T and CO1224TR CO detectors can be tested using a CO gas agent, fully meeting the requirements of NFPA 720: 2009. Simply put the detector into RealTest mode, spray a small amount of CO into the detector per the installation instructions, and within seconds the detector will alarm, indicating successful gas entry. (See the reverse page or the user manual for complete instructions.) When dangerous amounts of CO are detected, the CO1224T and CO1224TR detectors alert residents by sounding and flashing a temp 4 signal alarm. With 24/7 central station monitoring, residents are guaranteed protection whether they are away from home, sleeping, or already suffering from the effects of CO.

• RealTest™ enables a functional test using canned CO • Full compliance with UL 2075 • A code-required trouble relay • Wiring supervision with SEMS terminals • A six-year end-of-life timer • 12/24 VDC • A low current draw of 20 mA in standby and 40 mA in alarm • Versatile mounting for wall and ceiling • Accurate and reliable electrochemical sensing technology • Optional CO-PLATE CO Detector Replacement Plate to upgrade previously installed competitor detectors to the CO1224T

Electrical Specifications Operating Voltage 12/24 VDC Audible Signal 85 dB in alarm Standby Current 20 mA Alarm Current 40 mA (75 mA test) Alarm Contact Ratings 0.5 A @ 30 VDC Trouble Contact Ratings 0.5 A @ 30 VDC Physical Specifications Size: CO1224T Length: 5.1 in, Width: 3.3 in, Height: 1.3 in CO1224TR Diameter: 6 in, Height: 1.3 in Approximate Weight CO1224T: 7 oz ; CO1224TR: 11 oz Operating Temperature Range 32°F to 104° F (0°C to 40° C) Operating Humidity Range 22 to 90% RH Input Terminals 14 to 22 AWG Mounting Single-gang back box; surface mount to wall or ceiling