RFID Systems with all-metal components Contrinex offers RFID transponders as well as read/write modules in one-piece, all-metal housings of stainless steel, sealed at the sensing face. Because of their outstanding chemical and mechanical resistance, they are particularly well suited for use in difficult industrial conditions. The Contrinex read/write modules are available in sizes M18 and M30 with plastic caps or as all-metal models. The range is completed by a portable read/write device. If necessary, up to 4 read/write modules can be attached to each interface device. The Contrinex interface devices are available in three versions and serve as interfaces to Profibus, DeviceNet and RS485. The range of transponders includes non-embeddable classic plastic models as well as embeddable and non-embeddable impervious all-metal executions, with or without threading. All the transponders are both read and write, and have a memory of 2 kbits. Word or memory zones can additionally be read and/or write protected. As opposed to barcode solutions, RFID (Radio Frequency IDentification) systems permit both writing to and reading from passive electronic labels (battery-free transponders). Data is transferred to and from the transponder using a so-called read/write module. Thanks to great flexibility and operating security, as well as relative insensitivity to adverse environmental conditions, RFID solutions are used in countless industrial identification applications.