The Economy CordLess Fall Alarm and Exit Alarm are ideal for home or facility use. This portable monitor is designed to alert caregivers when an at-risk individual attempts to open a window or door without assistance. The monitor can be placed up to 300 feet away from the resident, allowing you to remove startling alarm noise from the room and create a quiet & secure environment for each resident. Monitor alerts with audible chime and bright blinking red light, and features an easy Low-Medium-High volume control. Battery Operated (3-C, Not Included). Optional AC Power Adapter (AC-04). The Wireless Window/Door Exit Alarm easily mounts to a door and door frame or a window and window frame. When door or window is opened, a signal is sent to the Economy CordLess Fall Alarm which will alert with audible chime and bright blinking red light.