The FineJoin D2181B Lite is an ultra-compact Industrial UHF RFID Reader engineered for space-constrained deployments including RFID smart cabinets and intelligent sorting systems. Housed in a slim, space-saving metal enclosure with an IP65 protection rating, this single-port terminal integrates 1 × SMA female antenna interface capable of achieving a long-range read/write distance of 0 to 15 meters (dependent on antenna and environmental setups). Powered by a proprietary anti-collision algorithm, it delivers rapid identification with an adaptive read rate exceeding 50 tags/second. The reader provides complete hardware flexibility via standard RS-232, RS485, and RJ45 Ethernet interfaces, alongside two optocoupler inputs and two relay outputs via GPIO (optional). Operating under a wide DC 9-24V voltage range, full host DLL SDK support and demo applications are included for rapid system commissioning.