A unique feature of the DKS proximity card reader product line is that the card readers are compatible with both passive and active tags. This allows a mixing of different cards and tags to achieve desired read ranges in different locations without having to install a second card reader or carry two tags. These readers feature a cosmetically appealing design that will blend with any architectural design and offer high durability and reliability. 26-bit Wiegand output. Most readers operate on 5-12 VDC. Proximity readers are not designed for stand-alone operation and must be connected to an access controller.