VR2W is a single channel acoustic markers of ultrasonicsignal receiver. Usually the VR2W cloth on the river or seawater under the formation of monitoring network, when the fish through, signals can be captured by acoustic markers.VR2W can achieve 24 hours of unattended operation,belonging to the "waiting" type of operation. Mainly used forfish migration path, the survival rates were assessed, the scope of activities, water distribution, feeding behavior,oviposition / mating behavior, water pollution and waterengineering effects on fish, Wen Yueceng effects on fish,aquaculture and so on. VR2W has two models,respectively, for receiving 69kHz and 180kHz markers.

Technical characteristics

The use of Advanced Bluetooth technology to realize high-speed data download, 8 seconds to download 100kb or 10000 times sampling. At the same time and 7 receivercommunication.

● 8MB flash memory, data storage of up to 1 millions oftimes sampling.

Special software VUE.

● can be used to form a positioning system (VPS) in fish.

● select underwater communications cables, withoutrecycling equipment can realize data transmission.

● select underwater communications cables, withoutrecycling equipment can realize data transmission.

● can configure cable cable transmission (VR2C)

● can configure acoustic communication machine to realize the wireless transmission (VR4-UWM)

● can configure acoustic communication machine to realize the wireless transmission (VR4-UWM)

● can be integrated in the buoy below, via satellite data transmission (VR4-G)