An apparatus for fluid detection comprises a fluid sensor positioned near a patient's body, an alarm connected to the fluid sensor, a closeable casing having a size that allows it to maintain the alarm within a space that is defined by the closeable casing, and a fastener coupled to the closeable casing. The fluid sensor provides a signal whenever the fluid sensor detects fluid. The alarm includes one or more status indicators that are responsive to the signal. The closeable casing allows the patient to see, hear, or otherwise sense, the alarm through the closeable casing. The fastener is affixed to: the patient's body, the patient's clothing, or both. The casing can be opened and closed, and optionally, the alarm can be removed and replaced in the space the casing defines.