The Carbon Monoxide Detector Warning Alarm Sensor by ABUS is a reliable and efficient home security device. Powered by 3 batteries, this white, 10cm diameter detector features an electrochemical carbon monoxide sensor and voice alerts for added safety. Manufactured in the United Kingdom, this model (First Alert 3120B) is designed to provide peace of mind against the dangers of carbon monoxide. With a manufacturer warranty of no warranty, this battery-powered alarm is a must-have for any home looking to increase its security measures.