... cm2}Wiring mouth: 0------G1/2 internal thread,1 wiring mouth 2------1/2NPT internal thread,2 wiring mouth, without blind plug ... 3------Pg13.5 internal thread, 2 wiring mouth, without blind plug 4------M20 internal thread, 2 wiring mouth, without ... blind plug 8--------Pg13.5 internal thread, 2 electrical interface, 1 blind plug 9--------M20 internal thread, 2 electrical interface,1 blind ...