External enclosure - MIKROTIK GPER-IP67-CASERugged outer casing for GPeR units. It can be easily mounted on walls and poles. Despite the name, meticulous tests have shown that in reality the casing has a protection level IP68 with protection against immersion in water as well as against dust. To safely extend the Ethernet network in mines, caves, maintenance shafts or outdoors, you must purchase a GPeR casing outdoors.