СMOS Logik IC : Generator use CMOS Timer5555 or use HEF40xx Logik IC. Low Freqence & Low Power Voltage = Low Power Current. For big interval use CMOS deviders, HEF4520B (/256) or CD4020A (/8192) or other CMOS Logik IC 40xx, 45xx. I liked to assemble such simple automation schemes, simple...