The system has a read-write range of 24-100mm and is compatible with existing 125 kHz systems. The BIS-L consists of three components: a read/write head, a data processor and a thin, low-cost data carrier family. The 1.6mm-thick data carriers are rugged enough to be permanently installed on pallets, and are available in 20, 30 and 50mm diameters. Each size is available in 40-bit read-only and 192-byte read/write versions. Data processor communication options include Interbus, Profibus and DeviceNet.