A wireless sensor device includes a housing. A sensor is disposed in the housing and is constructed and arranged to obtain an analog electrical signal from a human patient. A processor circuit is disposed in the housing and is constructed and arranged to convert the analog electrical signal to a digitized electrical signal. A transmitter is disposed in the housing and is constructed and arranged to transmit, in a wireless manner, data relating to the digitized electrical signal. A power supply powers the device. The sensor is preferably an electrode or a respiratory sensor.
