BRK Electronics First Alert CO615B 120V AC/DC Plug-in with 2 AA Batteries Backup Electrochemical Carbon Monoxide (CO) Alarm with Digital Display

Plug-in carbon monoxide alarm with digital display and battery backup meets most state and local codes for carbon monoxide alarms. Electrochemical Carbon Monoxide Sensor - the most accurate sensor available as compared to other sensing technologies Single Button Test/Silence Battery Backup Two silence features - can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm Convenient Installation Options: unit plugs directly into the wall or can be mounted higher on the wall using the line cord Large backlit display - shows visual confirmation of CO levels in PPM Peak Level Recall Button - recalls the highest level of Carbon Monoxide detected Remote Controlled Test Silence: use any remote control to silence unwanted alarm or to test alarm End of Life Signal provides audible notification alarms needs to be replaced 7-Years Limited Warranty Model # CO615B Weight 7.2 oz Dimension 3.3"H x 4.8"L x 2.1"D Operating Voltage 120V AC 60 HzTwo 1.5V AA Alkaline Battery Backup Temperature Range 40°F (4°C) to 100°F (38°C) Humidity Range 10% to 95% relative humidity (RH) Audio Alarm 85dB at 10 feet Test/Silence Electronically simulates CO conditions, causing the unit to alarm or temporarily silence the alarm Alarm Reset Automatic when carbon monoxide clears CO Sensor Electrochemical Indicator Lights/Sounds AC Power: Constant red light DC Power: Intermittent red light Audio Alarm (4 beeps, pause, 4 beeps), rapidly flashing red light Digital Display: (CO615B only) Displays battery level, CO levels in parts per million (PPM), Peak CO level Listing Listed to UL 2034 Standard