VN4020 , VIBRANIVO: VIBRATING LEVEL SWITCH FOR SOLIDS & SEDIMENTS IN LIQUIDS, TYPE VN 4020, W/O TEMP EXTENDED SHAFT, ELECTRONIC MODULE RELAY DPDT 19..230 V AC 19..40 V DC, MATERIAL PROCESS/EXT STAINLESS STEEL, PROCESS CONNECTION:THREAD NPT 1" CONICAL