Abstract: A gardening method and unit utilizes a unique liquid circulating system in combination with an adjustable, high intensity lighting system including a novel form of reflector panel assembly in which the feeding cycle and the lighting cycle can be closely regulated to control the environment for plant life within an enclosed area. The method and system of the present invention is particularly advantageous in relatively compact portable units so constructed that the seedlings or plants may be grown in upper and lower spaced trays, each having its own lighting system controlled by a common timer and a common liquid circulating system in which the liquid or nutrient solution may be pumped into the upper tray and drained by gravity into the lower tray to carry out combined top flooding and subirrigation. In the alternative the system is operative to carry out top-irrigation by spraying water in the form of a fine mist over natural or organic soils.

Abstract: A single wire antenna placed in proximity to an area to be protected senses the presence of electromagnetic fields including the normal ambient field and modulation thereof resulting from the presence of a moving intruder. The antenna signals are demodulated and filtered to provide the input to circuitry for inspecting these signals and producing a signal based upon differentiation between normal transient signals and random modulation signals associated with the movement of an intruder. Digital counter circuitry provides the differentiation and various time-out features can be incorporated to control the generation and/or transmission of alarm signals. The system includes various elements to permit easy testing of system operations by the user.