Profile: L S I Computer Systems, Inc. specializes in design and production of full custom and standard integrated circuits. We are an ISO 9002 certified company. Our product line includes programmable digital delay timers, dividers, lighting controls, counters, stepper motors controls and programmable digital locks. Our LS7210 is a MOS programmable digital timer that can generate a delay in the range of 6ms to infinity. The delay is programmed by 5 binary weighted input bits in combination with the time base provided. Our PIR sensor interface is featured with low quiescent current, direct interface with PIR sensor, two stage differential amplifier, and single and dual phase protection. It is used as indoor occupancy sensors. out door motion triggered lightnings for energy savings.