pressure switchPS-M18-C Pressure switch wall mounted boiler water pressure switch sensor gas water heater accessoriesOriginal TS-1095S-A155B3-C2D2 SPST Round Button 6mm*6mm*12.5mm 50mA 12V 200000 Cycles Tactile Switch TS1095SA155B3C2D23000-250CM 0-250 cm w.c Pressure switch/gagedanfoss ...