Kidde Silhouette Carbon Dioxide Alarm

This alarm is attractive and efficient. This low profile AC/DC powered unit operates on 120V. The sealed rechargeable lithium-ion battery backup will last 7 years, and provides protection during power outages. Technical SpecificationsPower Source: 120VAC, 60HZ, 60mA maxSealed-in, rechargeable,lithium-ion battery back-upSensor: ElectrochemicalAudio Alarm: 85dB at 10ftTemperature Range: 40°F (4.4°C) to 100°F (37.8°C)Humidity Range: up to 85% relative humidity (RH)Size: 4.83” x 4.76” x 1.49 “Weight: .62 lbs with batteryWiring: Quick connect plug with 8” pigtailsInterconnects: YesWarranty: 7 year limited.