An oscillating nozzle sprinkler for directing an adjustable flow of water therefrom at adjustable desired range and arc of coverage and at a pre-settable precipitation rate. The test ICs have chip IO pads conforming to a sub-set arrangement of the system IC chip IO pads. The circuit for applying power to mixed mode integrated circuits includes a modified IO cell of the second circuit. A sound emitter is mounted on the housing and is electrically coupled to the processor.