The present disclosure pertains to an electrode configured to provide electrical contact with skin of a subject. The electrode is a convertible electrode configured to function as a dry electrode and/or as a wet electrode according to the desired configuration. In a dry electrode configuration the electrode includes a conductive portion a receiving portion and an electrical coupling. In a wet electrode configuration the electrode includes conductive portion receiving portion a hydrogel material and electrical coupling. The conductive portion is configured to receive and/or transmit electrical signals from and/or to the skin of the subject. The receiving portionis configured to receive the detachable hydrogel material. Without the hydrogel material the electrode functions as a dry electrode. Responsive to the receiving portion receiving the detachable hydrogel material the electrode functions as a wet electrode.
