FIRST ALERT SC7016BTCA CO and Smoke Combination Alarm

The combination smoke and carbon monoxide alarm shall be a BRK Model SC7016BTCA and shall provide at a minimum the following features and functions: A photoelectric smoke sensing chamber and an electrochemical CO sensor. Powered by 120 V AC, 60 Hz and have a monitored AA battery backup and a solid state piezo horn rated at 85dB at 10 ft. and shall be capable of self restoring. The horn shall have a lower and varying horn frequency to make it easier for the elderly with normal age related hearing loss to better hear the horn. The unit shall have an End of Life signal. This signal should be capable of temporarily being silenced for up to 2 days. After about 2 days, the signal will resume. After about 2-3 weeks the signal cannot be silenced. A visual power-on indicator to confirm unit is receiving AC power or has switched to battery backup mode. Separate LED 's to indicate a smoke or CO alarm. The CO sensor is adjusted not to detect CO levels below 30 PPM and will not alarm when exposed to constant levels of 30 PPM for 30 days. It will alarm at the following levels: 400 PPM CO between 4 and 15 minutes, 150 PPM CO between 10 and 50 minutes and 70 PPM CO between 60 and 240 minutes.