Detecto’s in-bed scales feature flame-retardant, antibacterial 6 ft (1.8 m) long stretchers which are placed underneath the patient and hydraulically lifted inches from the bed for weighing. They feature locking casters, adjustable weighing arm, and steel construction. The ZERO key allows staff to easily subtract the weight of bedding for accurate patient measurement. Six AA alkaline batteries (not included) or optional AC adapter. Not for transport. EMR/EHR ready. 500 lb x 0.1 lb / 225 kg x 0.1 kg capacity.