VWS-BU is the base station that receives the data from all Verdict Wireless® sensors. The received data is forwarded to a connected PC (VWS-BU-RS232 or VWS-BU-ETH-01), data logger (WS-BU-RS485) or PLC system (VWS-BU-ANA). In addition to this, data can also be forwarded to an internet application and database using TCP/IP or GPRS (VWS-BU-ETH-03, VWS-BU-GPRS).

The distance between sensor and base station can be up to 1000 meters in case of free line-of sight. Characteristic in-building range values are between 50 and 80 meters. If the coverage area of 1 base station is not enough, additional base stations can be used to increase the coverage area. Base stations can be networked to collect all measurement data on 1 location. Several VWS-BU-ETH-01 base stations can be connected to a PC directly or over the LAN. Several VWS-BU-RS485 base stations can be networked on the same RS485 bus. The internet application offers the possibility to connect base stations on different sites VWS-BU is also used when installing and changing the Verdict Wireless® network. The base station receives settings for the sensors from the SensorGraph program running on a connected PC and forwards these settings to all sensors in the network. Newly added sensors receive the current network ID. When sensors are configured with alarm thresholds, the Verdict Wireless®
base station can power a switched relay to activate a system alarm. Detailed information has to be obtained via SensorGraph. This option is available on VWS-BU-RS485, VWS-BU-ANA, VWS-BU-ETH-01 and VWS-BU-ETH-03.

VWS-BU can optionally store measurement values on an SD card. This storage can be used for logging values when a PC or data logger is not connected. This option is available on VWS-BU-RS485, VWS-BU-ETH-01 and WS-BU-ETH-03.