Electronic sensors for sensing water leaks in residential and commercial buildings; Electronic sensors for sensing water located near the base of water-supplied appliances, devices, and systems; Electronic sensors for sensing water leaking from water heaters, washing machines, sinks, dishwashers, ice makers, refrigerators, sump pumps, basement toilets, and bathtubs; Electronic sensors for sensing temperature changes in the environment surrounding water-supplied appliances, devices, and systems; Electronic sensors for sensing post-installation self-movement, a change in orientation, and a change from its originally installed location; Electronic sensors for sensing water leaks simultaneously at more than one site in a building; Electronic sensors for sensing diminished battery power and need for battery replacement in water detectors; Electronic sensors for remotely indicating communication disruptions and outages relied upon by electronic sensors for reporting fluid leaks, temperature change, self-movement, changed orientation and location and any other operation anomaly; Electronic controls in the nature of wireless electronic controllers used to remotely communicate with and control the function of other electronic devices, namely, electronic leak detection sensors in buildings, electronic leak detection sensors associated with water-supplied appliances, electronic leak detection sensors associated with water-supplied devices, electronic leak detection sensors associated with water-supplied systems, electronically activated water shut-off valves, electronically activated alarms providing an audible signal, electronically activated alarms providing a visual signal, and communication devices providing remote reporting of any detected anomaly or malfunction in a monitored appliance, device, or system