... wall or equipment etc as a checkpoint.Entire stainless steel body,great concealed,waterproof,Long life>20yearsPatrolmanHUA-90BType:1990A- ... stored in the stainless steel case ,water-resistant.strong & durable.Used as patrolman identification.1. Ideal for Security Personnel, monitoring Factories, ... Extinguisher checks, Safety, Goods issue, Inventory, Asset tracking etc... Security Guard tour system