The X-Sense XR0A-SR Radon Detector is a continuous monitoring device designed for home use. With an LCD display for easy reading, this white radon detector operates on 3 AA batteries (included) for reliable power supply. The compact design, measuring 3 inches in diameter and 3.2 inches in width, makes it suitable for discreet placement in any room. Built by the trusted brand X-SENSE, this model provides accurate detection of radon levels to ensure the safety and well-being of you and your family.