RCI Ranger sets the electronic security benchmark for high-frequency, long-range identification receivers and transmitters. Based upon proven contactless digital ultra-high frequency (UHF) technology, the RCI Ranger receivers interface with a wide range of electronic access control systems by complying with either the legacy Wiegand communication protocol or the latest bi-directional Open Supervised Device Protocol (OSDP). Additionally, RCI Ranger transmitters are active devices, powered by the most reliable and common battery, and equipped with a potted proximity or contactless smartcard module. The modules can be ordered to support several proximity reader technologies and allow the transmitter to be used as a close-range credential.