Carry this unit around or wear it on your belt anywhere inside or outside your home up to 80 feet away from base unit. It uses different vibrating patterns along with six indicator buttons to help you easily recognize which area needs your attention. Once triggered, it will vibrate to signal an alert. The user then presses each indicator button one by one. The pager will vibrate a second time when the user has selected the correct alert function. Operates with a rechargeable battery pak (included) and comes with charger (included). Covered under a 1-year manufacturer warranty.