The subject of the invention is a traction sheave elevator without counterweight, which comprises at least a drive machine with traction sheave, hoisting ropes, an elevator car guided on its track or the like, car guide rails on one side of the elevator car, which is supported on the hoisting ropes such that the hoisting ropes are on one side of the elevator car. The devices collect andor manage data from an environment. A connecting member on the male housing connectably engages the female housing. In another embodiment, the first and second digital certificates are received by an intermediate network device.