X-Sense 10-Year Battery (Not Hardwired) Combination Smoke and Carbon Monoxide Detector Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC03

Dual Sensors for Double the Protection Equipped with a photoelectric sensor, this alarm is designed to provide the earliest possible detection and warning of fire. It also features an advanced electrochemical CO sensor that detects carbon monoxide leaks in the surrounding air. These dual sensors work independently of each other to provide the ultimate protection from two deadly threats, all in one unit. In case of an emergency, the 85-decibel alarm tone provides a clear, loud warning upon detection.   Different Working Modes 1. When the unit is working normally, the LED indicator flashes green once every 60 seconds. 2. When the battery in the unit is low, the LED indicator flashes yellow and the alarm chirps once every 60 seconds. 3. When the unit detects dangerous smoke or CO levels, the LED indicator flashes red and the alarm sounds an alarm tone. Technical Specifications Power supply: 10-year sealed lithium battery Sensor type: Smoke: photoelectric; CO: electrochemical Safety standards: UL 217, UL 2034, ULC S531, CSA 6. 19-01, EN 14604: 2005, EN 50291: 2010 Smoke sensitivity: 0. 97-1. 79%/ft. OBS (UL 217); 0. 97-2. 29%/ft. OBS (ULC S531) Standby current:   Package Contents 1 × Alarm Unit 1 × Mounting Bracket 3 × Screws 3 × Anchor Plugs 1 × User Manual 1 × Card