A water usage monitor can include a housing having a fluid flow path, a fluid inlet in fluid communication with the fluid flow path, and a fluid outlet in fluid communication with the fluid flow path. The monitor can include a controllable valve and a diverter that can accommodate a plurality of different types of sensors. The housing can include a dry housing interior fluidly isolated from the fluid flow path. The monitor preferably includes a power generator configured to generate a voltage when fluid flows through the fluid flow path and at least one sensor configured to measure at least one characteristic of a fluid flowing through the fluid flow path. The monitor can include a signal generator configured transmit signals from the power generator and from the at least one sensor to a remote processor. The power generator can be configured to power both the at least one sensor and the signal generator in response to fluid flow through the fluid flow path.

The water conduit flow indicator is a device that is configured to be installed between a spigot and a water conduit in order to provide an audible alarm that water fluid is flowing through the device. The water conduit flow indicator is further defined with a housing that features an inlet and an outlet. The housing includes an internal partition that separates a fluid side from a dry side. Located within the housing is a pair of impeller blades. The pair of impeller blades is further defined with a fluid impeller blade and a dry impeller blade. The dry side of the housing includes a ringer bell that comes into contact with the dry impeller blade such that as the dry impeller blade rotates, the ringer bell generates an audible noise that alerts an end user as to the fluid flow occurring through the water conduit flow indicator.

A self-rotating flow meter includes a housing, a rotating mechanism and a sensor. The rotating mechanism is disposed in a chamber of the housing between an inlet port and an outlet port. The sensor is disposed in the housing and near the rotating mechanism. The rotation mechanism contains inflow and outflow passages in a rotating shaft and a rotating disk respectively. The inlet flow passage has a centerline that is coincident with or parallel to the centerline of the rotating shaft. The centerline of any outlet flow passage in the rotating disk and the centerline of the rotating shaft are in two different planes and have a distance between them.

A flow sensor for sensing fluid flow. The flow sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the flow sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit.