Portable Carbon Monoxide Detector - Carbon Monoxide Detector Alarm for Travel, CO Detector with Digital Display for Apartment/Home/Kitchen,Easy to Read & Install - Shenzhen Lidingfeng Tech . Co ., Ltd, LDF-950

• The carbon monoxide detector alarm continuous monitoring of Carbon Monoxide levels to keep your family safe. Operated by 3 * 1.5V AAA batteries (not included),portable and easy installation,no need for socket, not affected by power failure, can be installed anywhere! Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.To ensure complete protection make sure to place one on each level of your home and in each bedroom. Simple to use,with a single test/reset button,when a dangerous level of carbon monoxide is detected the red LED will flashes and a loud alarm pattern will sound--Loud 90 decibel alarm with LED Flash. Working status， When the alarm goes off , the green light flashes every 30 seconds , indicating that the alarm is in a normal monitoring state . When the alarm detects that the CO concentration exceeds 50ppm, the green light and LCD light up , indicating that it has entered the early warning state .When the alarm detects that the CO concentration exceeds 150 ppm ( UL standard ), the green light and LCD light up , and the red light flashes quickly and gives an alarm sound , indicating that the alarm state is entered. CO concentration >=999ppm, and LCD displays"999PM" . All CO alarms are rigorously tested.We promise and guarantee the customer service by providing a response to any questions, concerns, and inquiries within 24 hours., Manufacturer: Shenzhen Lidingfeng Tech . Co ., Ltd