Go Direct* Rotary Motion Sensor, Resolution: 1deg or 0.25deg, Optical Encoder: Bidirectional, quadrature encoder, Maximum Speed: 30 rev/s at 1deg resolution, 7.5 rev/s at 0.25deg resolution, with Wireless: Bluetooth Connections, Wired: USB Connection
HOBO* Water Level Data Logger, low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments, 0.1% measurement accuracy, Depths up to 30 feet
HOBO* Water Level Data Logger, low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments, 0.1% measurement accuracy, Depths up to 13 feet
HOBO* Dissolved Oxygen Data Logger, Measure oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters, Oxygen Accuracy: +/-0.2 mg/L up to 8 mg/L, Temperature Accuracy: 0.2 Deg C, Depth Rating: 100 m