This portable carbon monoxide detector is a must-have for any home or garden. It is battery-operated and does not come with batteries included. The detector is designed to detect carbon monoxide gas and provide accurate readings. Ideal for use in homes and gardens, this carbon monoxide detector is easy to install and use. It is suitable for detecting carbon monoxide gas in small spaces and is perfect for those who want to keep their home or garden safe. With its compact design, this detector can be taken anywhere and is perfect for use in any environment. Open box inspected new unused