Датчик H2, детектор концентрации газа, водорода, модуль передатчиков IP65, высокая точность RS485, 4-20 мА, 0-5 В, 40000 PPM

ZZ ultra-low temperature freezer minus 60 experimental negative 80 refrigerator industrial grade low temperature

0-10v Absolute Negative Vacuum air Pressure Sensor With Factory Price

IN-R1000 Vacuum Sealing Drainage Therapy Vac Machine/negative Pressure Wound Therapy Npwt Unit

USB-Driven Independent Electrolysis Hydrogen Production Hot Water Pot Household Multi-Function Negative Ion Smart Touch Desktop