MOSUO Smoke and Carbon Monoxide Detector, Alarm with Voice Warning, 10 Year Lithium Battery Backup, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check

Product Highlight: 10 year battery life Low battery hush Loud 85 decibel alarm Low battery signal Accurate, Reliable, & Highly Sensitive Fireproof ABS material Easy to install and test Single test/silence button Meet UL217 (the new 2020)& UL2034 standards Equipped with both a photoelectric and ionization sensor Complies with all current 10 year legislation in U. S. states and cities where required. Function Description: Normal: 1 green led flashes, 1 minute pause Smoke alarm: 3 beeps with 3 red led flashes, 1.5 seconds pause CO alarm: 4 beeps with 4 red flashes, 5 seconds pause Low battery: 1 chirp with 1 yellow led flash, 60 seconds pause. Replace alarm Trouble: 2 beeps with 2 red flashes, 60 seconds pause. Replace alarm End of life: 2 chirps with 1 yellow flash, 60 seconds pause. Deactivate and replace alarm Manual trigger button test: 6 buzzers with 6 red flash, 8 buzzers with 8 red flash Technical Specs: Smoke Sensor Type: Photoelectric CO Sensor Type: Electrochemical Working temperature?-10?~+50? Alarm sound: ?85dB (3 meters) Relative humidity: ?95%R.H. Smoke sensitivity: 1-3%ft Alarm mode: Siren with flash (Buzzer & Red LED) Operating voltage: DC 3V CO Alarm concentration: 70ppm: 60~240 min 150ppm: 10~50 min 400ppm: 4~15 min Package Contents: 1 * Smoke and Carbon Monoxide Detector 1 * Mounting bracket 2 * Screw 2 * Anchor plug 1 * User manual Note: Clean alarm monthly. Test weekly. Avoid extremely dusty, dirty or greasy areas. Instructions labels on the device, you don't worry about losing user manual or instructions.