Arrhythmia Monitoring Device Reconfigurable as Patch Device or Holster Device

A patient monitoring system for use in either a patch mode or a holster mode for monitoring physiological data of a patient includes a multi-mode sensor configured to continuously and/or intermittently acquire the physiological data from the patient in the least two modes and to transmit the acquired physiological data to a remote location and/or record the acquired physiological data in an internal memory, the physiological data including one or more of patient electrocardiogram (ECG) data, patient posture, patient movement, radio-frequency (RF) based physiological data, body temperature, and/or patient respiration; an attachment mechanism disposed on the multi-mode sensor, the attachment mechanism configured to removably connect the multi-mode sensor to either a holster and associated monitoring cables worn by the patient or a patch worn by the patient; at least one electrical contact disposed on the multi-mode sensor, the at least one electrical contact configured to engage a counterpart electrical contact of the holster and/or a counterpart electrical contact of the patch; and configuration circuitry disposed in the multi-mode sensor. The configuration circuitry is configured to determine when the multi-mode sensor is removably connected to the holster and cause the multi-mode sensor to acquire the physiological data in the holster mode when connected to the holster, and to determine when the multi-mode sensor is removably connected to the patch and cause the multi-mode sensor to acquire the physiological data in the patch mode when connected to the patch.