... it's extremely easy to use. A complete set of security patrol system consists of several parts: guard tour reader OCOM ... -PBU320 / OCOM-PB320, information tag PID2 and ID tag PID-KEY. Proximity Reader's Technical Parameters:Working Mode: ProximityMemory: 2,000 ... . Application: The product can be widely used in guard tour, security tour, line tour, train road tour, pipe line tour, bank ...