Minilec, an iso 9001 company, manufactures products for electric control circuits, power distribution, motor controls, etc. The company offers liquid level controllers. These are available for conductive liquids like water as well as nonconductive liquids like diesel, oil, etc. Level controllers for conductive liquids are supplied with stainless steel electrodes with various models available for single level control [ilcd 1], two level control [ilcd 2/wlcd 1], two level and two tank control levels, plus extra high and low level alarm [ilgd 2]. Level controllers for non-conductive liquids are supplied with photo sensor and are suitable for one level [dlcd 1] and for two levels [dlcd 2].