VDU2506 is an UWB anchor based on TWR high precision ranging. It can receive tag broadcast package to calculate the distance and send command to tags at the same time, making it easy for bi-direction alert, electrical fence and distance keeping function, etc. VDU2506 can be perfectly integrated with the indoor environment with white curved shell design. Itsuniquewaterproof structure fits outdoor environment as well. VDU2506 use 2 stage of Power Amplifiers and single-stage Low Noise Amplifier to enhance the transmit and receive performance. The coverage of VDU2506 can be more than 500 meters ranging with tags that using2stage PA or with another VDU2506. And the static precision is 0.3m in the CEP95 condition. VDU2506 support multiple power supply ways. Power over Ethernet way can reduce construction difficulty;DC 5V 1A power supply and WiFi network can reduce the network wiring cost; Also, the internal PCBAreserves2-pin-2.54mm-pitch-JST battery connection interface for Li-battery power supply. And it can charge the battery with up to 800mA current, which is convenient to continue working in case of power failure.