The Gentex SCR photoelectric dual smoke & CO alarm with relay is engineered to virtually eliminate nuisance alarms and deliver outstanding performance wherever reliable fire & CO protection is required. 9V alkaline battery back-up ensures continued operation even during a power outage. ANSI/UL 217, ANSI/UL 2034 and ANSI/UL 539 listed and warranted for one year from date of purchase.
 

Features:

• Listed to UL 217, 9th Edition
• Multi-Criteria smoke sensing including photoelectric light scattering sensing technology 
• Electrochemical CO sensor
• 10-year end-of-life indicator
• Temporal 3 (T3) evacuation signal pattern for smoke and heat annunciation
• Temporal 4 (T4) signal pattern for CO annunciation
• 85 dBA evacuation horn piezo
• Horn frequency 3100Hz
• Nominal 2.5% sensitivity
• Programmable relay operation
• Relay operates on battery back-up
• 8-hour alarm memory
• Push button self-test 
• Push button functional test 
• Quick-disconnect wiring harness
• Interconnect with Gentex tandem capable smoke alarms
• Non-latching (self-restoring) alarm
• Pulsing LED sensing chamber
• Fully insect screened
• Mounting hardware adapts to standard junction boxes
• Dust cover to prevent contamination during installation
• Low or missing battery indicator