BRK® PRC710B (model PC1210) is a 3 VDC lithium power cell single station photoelectric smoke and carbon monoxide combination alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings as defined in standard NFPA 101. BRK® PRC710B has been fully tested and complies with, UL 217, UL 2034, CSFM, NFPA 72, NFPA 720, NFPA 101 and other agencies that model their codes after the above agencies. It meets building codes where tamperproof 10 years sealed lithium battery operated photoelectric smoke and carbon monoxide combination alarms are required and with model building codes published by the ICC.