The Roam Alert System provides effective wander prevention that is easy to implement, and easy for your staff to use. And it's proven itself at thousands of facilities over a period spanning more than 20 year.Main FeaturesLength 3 1/4 in, Width 1 in, Height 5 1/2 in,For Use With Roam Alert SystemColor Gray, Battery Type 9VDCGeneral InformationName: STANLEY AR3TR02-POC RoamAlert Pocket Tag Reader, Stanley Healthcare Solutions, STANLEY HealthcareCategory: STANLEY Healthcare, Communications, Nurse Call Systems, Patient Wandering DevicesUPC Code: 840948100048Country of Origin: United States. Country of origin is subject to change.