Using default firmware/device personality, in which inputs are sampled and immediately TRANSMITTED to the GATEWAY, the measurement nodes can sample on the order of 30-60 samples per minute. This rate is user-defined and can be programatically assigned in NI LabVIEW.
Using the programmable nodes and the LabVIEW WSN MODULE, you can sample faster locally and store or PROCESS the data for transmission at a later time. Because of this, you can sample faster than the default rates. View the LabVIEW WSN Benchmarks document for information on sampling faster with NI WSN measurement nodes.