Detecto's SlimPro is a high-capacity, low-profile digital scale for clinical or personal weighing use. The spacious, extra-wide weighing platform easily accomodates patients up to 440 pounds. The non-skid rubber mat provides patient safety while weighing. As the name implies, DETECTO's SlimPRO is an incredibly thin 1.4-in/3-cm high scale that contains loads of weighing performance and durability for clinical-grade usage weighing heavy patients. The LCD displays 1.5-inch digits for easy viewing. The RS232 port allows communication between printers and computers for data storage. The auto-on and auto-off feature helps conserve battery life. This scale is powered by 4 AAA batteries, which are included.